'Psalm' in the Bible

God hath in full completed this to us their children, having raised up Jesus, as also in the second Psalm it hath been written, My Son thou art -- I to-day have begotten thee.

What then is it, brethren? whenever ye may come together, each of you hath a psalm, hath a teaching, hath a tongue, hath a revelation, hath an interpretation? let all things be for building up;