All things ... - See Matthew 28:18; Matthew 11:27. No one could have said this who was not equal with the Father. The union was so intimate, though mysterious, that it might with propriety be said that whatever was done in relation to the Son, was also done in regard to the Father. See John 14:9.
Related Commentaries of John 16:15
John 16:15
15 All things that the Father hath are mine: therefore said I, that he shall take of mine, and shall shew it unto you.