The Godhead pt. 5

Christ knew he wasn't equal to God, that's why he said that the Father was greater than him. This is why Philippians says that he thought it not robbery to be equal with God, but he humbled himself and made himself of no reputation because he was in the form of a man instead of the word which he was before he became a man (the Son). This is why the epistle says that after Christ has put everything under his subjection, he will be in subjection to God (the Father) who did put everything under his subjection.