Is 1 Corinthians 15:27 problematic for trinitarians?

The doctrine of the Trinity. There is one God who exists in 3 distinct persons. God is God, Jesus is God, the Holy Spirit is God. The Father is distinct form the Son and the Spirit and the Holy Spirit is distinct from the Son and the Father, and the Son is distinct from the Father and the Holy Spirit.

1 Cor 15 is an example of the distinctions.

Example: Women have no advantage or disadvantage over a man in their relationship with God. They are co-equal. Woman and Men, Husbands and wives, who are believers have different responsibilities as believers. When a wife is subject to her husband, she is in no way less equal or less spiritual than an man. In the same way, Jesus was no less God when He submitted himself to the Father.

Your question gets at what is presently a hotly debated issue among Trinitarians, Etneral Functional Subordination. Many opponents of EFS argue that the conclusion you draw here is the logical implication of EFS. Dr. Glenn Buttner recently recently published this paper arguing against EFS, and he includes a section that deals directly with 1 Corinthians 15, and I think it gives a solid response to the objection you raise as well:

There is therefore exegetical warrant to interpret the passage as not referring to the eternal functional subordination of the Son. Based on the context of verses [1 Corinthians 15:] 20–23 the pericope appears to be speaking of Jesus in his humanity, and the OT passages cited in the passage refer to Christ’s role as human mediator. There is nothing in the text to strongly suggest otherwise.[87] If the passage speaks of Christ in his humanity, then it does not speak of the eternal relationship between the Father and the Son because Jesus assumed humanity in time. The work in view here is Jesus’ work qua human being obedient to the Father and does not clearly seem to reveal anything about the relationship between Father and Son in the immanent Trinity apart from this human nature and mediatorial role. Finally, the interpretation of 1 Corinthians 15 offered here is not a novel invention of the author but does have its advocates among biblical exegetes.[88] Therefore I must conclude that the only passage that explicitly speaks of the Son submitting to the Father before or after his first-century incarnate life speaks of Jesus in his humanity and does nothing to illuminate the eternal relationship between the Father and the Son qua divinity. Since none of the other passages offered by the advocates of EFS uses the term submission but these passages rather speak of “sending” or “predestination” or “giving,” and since these terms can be interpreted in terms of the economy of salvation as grounded in the Father’s eternal generation of the Son rather than in terms of eternal submission. [pp. 145-146 of linked paper]

[87] Several interpreters have suggested that the use of “the Son,” a unique usage in the NT, indicates that the passage is speaking of the divine hypostasis. See, e.g., David E. Garland, 1 Corinthians (BECNT; Grand Rapids: Baker, 2003) 713. However, I believe the word could just as easily allude to the Davidic promise in 2 Samuel 7 where the king will be “a son” to the Father.

[88] Joseph A. Fitzmyer suggests that the final subjection of the Son will be “because Christ’s regnal and salvific role will be at an end” (First Corinthians [Anchor Yale Bible; New Haven, CT: Yale University Press, 2008] 574). See also Alan F. Johnson, 1 Corinthians (IVPNTC; Downers Grove, IL: InterVarsity, 2004) 294; George T. Montague, First Corinthians (Catholic Commentary on Sacred Scripture; Grand Rapids: Baker, 2011) 274.

Emphasis mine. This section begins at the first full paragraph or page 144, I've offered only the most relevant section in the answer here for brevity.

Note: I recognize that this particular response isn't really available to Trinitarians who affirm EFS. I'd like to see what they have to say in response. For further reading from an EFS perspective, Buttner gives these citations for Wayne Grudem and Bruce Ware on 1 Corinthians 15:

Bruce A. Ware, Father, Son, and Holy Spirit: Relationships, Roles, and Relevance (Wheaton, IL: Crossway, 2005). 83-84

Wayne Grudem, “Biblical Evidence for the Eternal Submission of the Son to the Father,” in The New Evangelical Subordinationism? 251 (21 in link)

The Apostle Paul explains it quite nicely at Philippians 2:3-8. Vs3, "Do nothing from selfishness or empty conceit, but with humility of mind let each of your regard one another as more important than himself; vs4, do not merely look out for your own personal interests, but also for the interest of others." This is not hard to understand because true love puts others first.

Vs5, Have this attitude in yourselves which was also in Christ Jesus." So what kind of an attitude and love did Jesus have? Vs6, who, although (although means in spite of the fact) He/Jesus existed in the form of God, did not regard equality with God a thing to be grasped."

vs7, but emptied Himself, (how?) by taking the form of a bond-servant, and being made in the likeness of men. vs8, And being found in appearance as a man, He humbled Himself by becoming obedient to the point of death, even death on a cross." (Not a stake).

So the one person of Jesus Christ took upon Himself the essential attributes (morphe) of a servant/man. Instead of clinging to what was rightfully His before He became a man He forewent the prerogatives of His deity. That's what it means when it says, "He emptied Himself." John 17:5 states,

And now glorify Thou Me TOGETHER with Thyself, Father, with the glory I HAD WITH THEE BEFORE THE WORLD WAS."

Or to put this another way. Jesus the Son of God voluntarily submitted Himself to His Father. The Son was inferior to His Father in position only, but equal in nature. The President is superior in position because he is the President. He is not better than you in nature because he has the same human nature as we do.

Now, I'm somewhat disturbed about your comment, "Jesus as a unique spirit creation of Jehovah." You and your organization are "assuming" Jesus is a spirit creation of Jehovah. I just gave you evidence that Jesus existed as God all along from John 17:5 and here at Philippians 2:6.

The following is what Greek Scholar A.T.Robertson says. What do your Greek Scholars have to say to refute Mr.Robertson?

Verse 6

Being (υπαρχων — huparchōn). Rather, “existing,” present active participle of υπαρχω — huparchō In the form of God (εν μορπηι τεου — en morphēi theou). Μορπη — Morphē means the essential attributes as shown in the form. In his preincarnate state Christ possessed the attributes of God and so appeared to those in heaven who saw him. Here is a clear statement by Paul of the deity of Christ. A prize (αρπαγμον — harpagmon). Predicate accusative with ηγησατο — hēgēsato Originally words in μος — ̇mos signified the act, not the result (μα — ̇ma). The few examples of αρπαγμος — harpagmos (Plutarch, etc.) allow it to be understood as equivalent to αρπαγμα — harpagma like βαπτισμος — baptismos and βαπτισμα — baptisma That is to say Paul means a prize to be held on to rather than something to be won (“robbery”). To be on an equality with God (το ειναι ισα τεοι — to einai isa theoi). Accusative articular infinitive object of ηγησατο — hēgēsato “the being equal with God” (associative instrumental case τεωι — theōi after ισα — isa). Ισα — Isa is adverbial use of neuter plural with ειναι — einai as in Revelation 21:16. Emptied himself (εαυτον εκενωσε — heauton ekenōse). First aorist active indicative of κενοω — kenoō old verb from κενος — kenos empty. Of what did Christ empty himself? Not of his divine nature. That was impossible. He continued to be the Son of God. There has arisen a great controversy on this word, a Κενοσις — Kenosis doctrine. Undoubtedly Christ gave up his environment of glory. He took upon himself limitations of place (space) and of knowledge and of power, though still on earth retaining more of these than any mere man. It is here that men should show restraint and modesty, though it is hard to believe that Jesus limited himself by error of knowledge and certainly not by error of conduct. He was without sin, though tempted as we are. “He stripped himself of the insignia of majesty” (Lightfoot).

No, that verse is not a problem for trinitarians. It would have been a problem if it had said that God the Father had also been put under Jesus' feet, but of course it does not say that. There is a tendency, however, for that point to be missed if a person has it in their head that the Son of God is inferior to the Father (due to a belief that the Son had a starting point in time, which trinitarians eschew).

The Trinity doctrine never, at any point, claims or even suggests that any of the three who subsist in the Godhead are inferior to the others. They are stated to be co-equal as to deity. So, it's the question of equality in deity that causes all the confusion with those who struggle with the Trinity doctrine. Trinitarians don't struggle, because they understand that co-equality in divine nature does not rule out each of the three relating in a particular way to the others, and having their respective roles within the Godhead, which forms a oneness that is sublime.

I'm just putting this as simply as possible, given that other answers have gone into detail and provided exhaustive explanations. I hope this helps you grasp why 1 Corinthians 15:27 is not a problem for trinitarians.

I don't see a problem.

Father and Son are uncreated and eternal. God is Spirit, as Jesus said.(1)

Father and Son abide in a perfection of divine union, in one Holy Spirit.(2)

This is an eternal begetting, Father and Son, in one Holy Spirit. (2)

All that is created is put under the feet of him who is manifested. (3)

He who is manifested is manifested in humanity. (5)(6)

And that humanity is exalted to the throne of God. (3)

All things are put under his feet. (4)

Except, of course, him who put all things under him. (4)

Why would anyone have a 'problem' with this ?

I have absolutely no idea what a 'unique spirit creation' is.

παντα γαρ υπεταξεν υπο τους ποδας αυτου οταν δε ειπη οτι παντα υποτετακται δηλον οτι εκτος του υποταξαντος αυτω τα παντα [I Corinthians 15:27 TR]

For he hath put all things under his feet. But when he saith all things are put under him, it is manifest that he is excepted, which did put all things under him. [I Corinthians 15: 27 KJV]

(1) John 4:24 God is a Spirit [KJV] [A]

(2) I John 1:2 ... the life the eternal which was with the Father [EGNT] [B]

(3) Psalm 45:6, Hebrews 1:8 Thy throne, O God is for ever and ever

(4) I Corinthians 15:27 For he hath put all things under his feet [KJV]

(5) I John 1:1 Our hands have handled - of the Word of Life [KJV]

(6) John 3:18 ... the name of the only begotten Son of God [KJV]

[A] King James Authorised Version

[B] The Englishman's Greek New Testament (Interlinear Translation)

No problem for Trinitarians at all.

The context of 1 Corinthians 15:27 is actually a big problem for Unitarians.

1 Corinthians 15:27-28 [27]For he hath put all things under his feet. But when he saith all things are put under him, it is manifest that he is excepted, which did put all things under him. [28]And when all things shall be subdued unto him, then shall the Son also himself be subject unto him that put all things under him, that God may be all in all. • subjects "all things" to Christ.

Christ was not always subject to God according to verse 28.

When will the Son subject himself to God in 1 Cor 15:28?

When "all things" (all creatures except God) will be subjected to the Son, then, the Son will subject himself to God. This shows that God and Christ are equal because they are not part of "all things" which are subjected to them.