Exodus 20:3 “You shall have no other gods before me”
Matthew 6:33 But seek ye first the kingdom of God, and His righteousness; and all these things shall be added unto you.
first - First in time, first in place, first in succession, first in rank, first in influence, first in honour, first in principle.
James 4:7 Submit yourselves, then, to God. Resist the devil, and he will flee from you.
God Must Be First
Proverbs 3:6 In everything you do, put God first, and He will direct you and crown your efforts with success.