Albert Barnes Commentary John 16:15

"All things whatsoever the Father hath are mine: therefore said I, that he taketh of mine, and shall declare [it] unto you." — John 16:15 (ASV)

All things, etc. 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 could properly be said that whatever was done in relation to the Son was also done in regard to the Father. See John 14:9.