One God, the Father. 1Cor 8:6
1 Corinthians 8:6 KJV
But to us there is but one God, the Father, of whom are all things, and we in him; and one Lord Jesus Christ, by whom are all things, and we by him.
This statement is in the context of the incarnation.
Paul is saying that there is one God the Father and one Lord Jesus Christ. This statement does not exclude the Father from being Lord nor does it exclude Jesus Christ from being God.