Charles Ellicott Commentary Psalms 79:13

"So we thy people and sheep of thy pasture Will give thee thanks for ever: We will show forth thy praise to all generations." — Psalms 79:13 (ASV)

“The last word of the psalm is Tehillah; the one crowning privilege of God’s people; the exulting and triumphant confidence in God, which only His chosen can entertain and express. It is here placed in splendid contrast with the reproach of the heathen, and of the malicious neighbours mentioned in the preceding verse. Let them curse so long as you bless (Burgess, Notes on the Hebrew Psalms).”