G5568–ψαλμός–psalmos

and David himself saith in the Book of Psalms, The Lord said to my lord, Sit thou on my right hand,

ψαλμῶν· psalmōn “of Psalms:”

and he said to them, `These `are' the words that I spake unto you, being yet with you, that it behoveth to be fulfilled all the things that are written in the Law of Moses, and the Prophets, and the Psalms, about me.'

ψαλμοῖς psalmois “in [the] Psalms”

for it hath been written in the book of Psalms: Let his lodging-place become desolate, and let no one be dwelling in it, and his oversight let another take.

ψαλμῶν· psalmōn “of Psalms:”

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.

ψαλμῷ psalmō “psalm”

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;

ψαλμὸν psalmon “a psalm”

speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord,

ψαλμοῖς psalmois “psalms”

Let the word of Christ dwell in you richly, in all wisdom, teaching and admonishing each other, in psalms, and hymns, and spiritual songs, in grace singing in your hearts to the Lord;

ψαλμοῖς, psalmois “in psalms,”