I suggest that Peter's reference to the "promise of the Holy Spirit" does not mean that God will send the Holy Spirit to the Son. I suggest that this means the promise of the Holy Spirit is meant for us.
John 14:16 And the Father will give you another Comforter..
John 14:26 But the Comforter, which is the Holy Ghost, whom the Father will send in my name.....
John 15; 26 But when the Comforter is come, which I will send unto you from the Father...
John 16:7 ...for if I go not away, the Comforter will not come unto you, but if I depart I will send him unto you.
So God promises the Holy Spirit, and the Son promises the Holy Spirit, to be sent to the same recipients. The promise became a reality at Pentecost, and is a reality in the life of every believer.
No faith required here on the part of either the Father or the Son. This was determined in eternity by the Godhead, as Marcia has pointed out.
Tom
John 16:7 proves that Jesus had faith. The very fact he was telling them these things shows he had faith the Father would raise him and give him the things promised. I have never counted them but there are proberly 25 verses that say God implicating the Father that the Father raised Jesus from the dead. We have one verse about Jesus raising himself which even in itself is a statement of faith. I showed in John 5 that Jesus understood where his life comes from. This the Word who was made flesh saying only the Father had life inherent and that thru the resurrection he would give him this life.
The Word was made flesh and dwelt amoung us and they called his name Jesus. This Jesus said thay which is born of the flesh is flesh and that which is born of the spirit is spirit. Marvel not that I said unto thee ye must be born again.
Did this apply to Jesus also? I have posted many verses of him being born flesh.Another would be Rom. 1:3. There are many verses that speak of the resurrection as a birth, some I have quoted.
I might add if he would believe Gen. 2:7 and Gen. 2:17 as they are written then we would understand what these other verses say.
Yes from the foundation of the world when it was determined that the Son would be given the Word that became flesh did have would have and gives to us faith.