Malachi 2:10
Have we not all one father? hath not one God created us? why do we deal treacherously every man against his brother, by profaning the covenant of our fathers?
What this passage establishes
One Father and one God are named as the Creator of all people.
Why it matters in the argument
Scripture says God created alone, then the New Testament places creation in Christ. The identity claim is stronger than merely saying Jesus assisted another Creator.
Apostolic connection
Because the LORD says He created by Himself, New Testament creation passages reveal Jesus within the identity of the one Creator.
Common misunderstanding
Language such as ‘by’ or ‘through’ does not require a second creator beside God; Scripture also describes God creating by His word, wisdom, power, and will.
How to use it in conversation
Pair an Old Testament ‘created alone’ passage with a New Testament passage that attributes creation to Christ.