Psalm 25:21

Let integrity and uprightness preserve me
Meaning either his own, as in ( Psalms 7:8 ) ( 26:1 ) ; and then the sense is, either that God would preserve him, seeing he had acted the faithful and upright part in the government of the people of Israel, and they had rebelled against him without a cause; see ( Psalms 78:72 ) ; or that those might be continued with him, that he might not be led aside by the corruptions of his heart, and the temptations of Satan, and by the provocations of his rebellious subjects, to act a part disagreeable to his character, as a man of integrity and uprightness; but that these remaining with him, might be a means of keeping him in the ways of God, ( Proverbs 13:6 ) ; or else the integrity and uprightness of God are designed, which are no other than his goodness and grace to his people, and his faithfulness in his covenant and promises, or his lovingkindness and his truth; see ( Psalms 40:11 ) ;

for I wait on thee:
in the use of means for deliverance and safety; the Targum is, "for I trust in thy word".