To such as keep his covenant; to them that perform the condition of God's covenant, that sincerely love and obey him. Such restrictions are oft added, as in the general to overthrow the presumptuous hopes of ungodly men, so particularly to admonish the Israelites not to rest too much upon the privileges of their parents, or the covenant made with them, nor to expect any benefit by it, but upon condition of their continuance in God's covenant. That remember his commandments to do them; that have them much in their thoughts, and practise them in the course of their lives.
Related Commentaries of Psalms 103:18
Psalms 103:18
18 To such as keep his covenant, and to those that remember his commandments to do them.