We see Ps.7 repeated in Acts 13:33. This also clearly shows Jehovah as the Father speaking to the Son.
Psalm 2:7I will tell of the decree: Jehovah said unto me, Thou art my son; This day have I begotten thee. - ASV.
Acts 13:33that God hath fulfilled the same unto our children, in that he raised up Jesus; as also it is written in the second psalm, Thou art my Son, this day have I begotten thee. - ASV.
Only Jehovah is the Father, and the Father, alone, is Jehovah!