Upvote:3
"Our approach is to use Scripture as our sole and final authority in understanding who God has revealed Himself to be, and who is Jesus the Messiah." (https://www.biblicalunitarian.com/about)
With this statement in mind, I see no reason to believe Biblical Unitarians do not believe in creatio ex nihilo. They hold to the teachings of Genesis 1:1 and Hebrews 11:3 like any Christian would.
Unitarians distinguish themselves from classically orthodox Christians (think Council of Nicea) by denying trinitarianism. They believe the Godhead to be unitary, with only God the Father. They identify the word "Word" in English translations of John 1:1 (it's logos in Greek) not as Jesus, but as "Godβs expression" or God's wisdom (https://www.biblicalunitarian.com/videos/but-what-about-john-1-1). It is true that logos is a word with many meanings and a kind of elasticity and lexical richness that no single English word can capture. As for the identification of the Word "as God" in 1:1, Biblical Unitarians will likewise highlight the lexical richness of the Greek theos and note that lesser beings than the true God can be called theos. In the Septuagint translation of Psalm 82:1, theos and related forms are used to speak of lesser divine beings or lowercase-'g'-gods.
Classically orthodox Christians suggest that John 1:1-18 refers to Jesus, with vv. 14-18 especially linking "the Word" with Jesus.