Ephesians 2:10
"For we are His workmanship, created in Christ Jesus for good works, which God prepared beforehand so that we would walk in them."
"Created in Christ" Means We Are Created in Him, Not That He Is a Creature
Paul clarifies that we are the ones created in Christ. Any reference to His creation is actually about our recreation in Him.
But the Apostle opposes such a doctrine a little before, when he says, 'For we are His workmanship, created in Christ Jesus'; and if in Christ we are created, then it is not He who is created, but we in Him; and thus the words 'He created' are for our sake.
Athanasius the Apostolic (AD 373) Discourses Against the Arians