תהילים ג:ט פירוש: רש״י ורד״ק

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.

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.

Thy blessing be upon Thy people. Selah: – That Thy people may not perish in this war.