I will declare the decree: the LORD has said unto me,
You are my Son; this day have I begotten you.
All Commentaries on Psalms 2:7 Go To Psalms 2
Augustine of Hippo
AD 430
6. "The Lord hath said unto me, Thou art My Son, to-day have I begotten Thee" (ver. 7)., Although that day may also seem to be prophetically spoken of, on which Jesus Christ was born according to the flesh;. and in eternity there is nothing past as if it had ceased to be, nor future as if it were not yet, but present only, since whatever is eternal, always is; yet as "today" intimates presentiality, a divine interpretation is given to that expression, "To-day have I begotten Thee," whereby the uncorrupt and Catholic faith proclaims the eternal generation of the power and Wisdom of God, who is the Only-begotten Son.