Come near unto me, hear this; I have not spoken in secret from the beginning; from the time that it was, there am I:
and now the Lord GOD, and his Spirit, has sent me.
All Commentaries on Isaiah 48:16 Go To Isaiah 48
Jerome
AD 420
When all things were made by the Father, he [the Son] was there with him, in whom the Son rejoiced when he said, I am he who always was with the Father and in the Father and never was without the Father, and who now speaks, and due to the weakness of the flesh I assumed, I say that “the Lord has sent me and his Spirit.” In this short verse we are shown the mystery of the Trinity.