Acts 13:33

agreeable to what is written in the first psalm, "thou art my son, this day have I begotten thee."

Hebrews 5:5

Wherefore Christ himself did not assume the character of an high priest; but it was confirm'd by him that said, "thou art my son, to-day have I begotten thee."

Hebrews 1:5-6

for to which of the angels did he ever say, " thou art my son, this day have I begotten thee? and again, I will be his father, and he shall be my son?

Treasury of Scripture Knowledge

Summary

God hath fulfilled the same unto us their children, in that he hath raised up Jesus again; as it is also written in the second psalm, Thou art my Son, this day have I begotten thee.

Bible References

Thou art

Hebrews 1:5
for to which of the angels did he ever say, " thou art my son, this day have I begotten thee? and again, I will be his father, and he shall be my son?
Hebrews 5:5
Wherefore Christ himself did not assume the character of an high priest; but it was confirm'd by him that said, "thou art my son, to-day have I begotten thee."