It is proper to the Father to beget the Son,[1] and to the Son to be begotten of the Father,[2] and to the Holy Ghost to proceed from the Father and the Son from all eternity.[3]
1:
Hebrews 1:5-6
Hebrews 1:8
2:
John 1:14
John 1:18
3:
John 15:26
Galatians 4:6