לַיהוָ֥ה הַיְשׁוּעָ֑ה עַֽל־עַמְּךָ֖ בִרְכָתֶ֣ךָ סֶּֽלָה׃
Beim Herrn ist Hilfe; über dein Volk komme dein Segen. Sela.
Rashi on Psalms
It is incumbent upon the Lord to save, etc. It is incumbent upon Him to save His servants and His people, and it is incumbent upon His people to bless Him and thank Him forever.
Radak on Psalms
To the Lord belongeth salvation: – and as Thou wilt deliver me I will acknowledge it and say, to the Lord belongeth salvation, and without Him man shall not be saved.
Radak on Psalms
Thy blessing be upon Thy people. Selah: – That Thy people may not perish in this war.