I am a companion of all them that fear thee - I find my associates and friends among those who worship thee; not with the profane and the wicked. “A man is known by the company that he keeps;” and it is an evidence of piety when we seek our companions and friends among the pious. It shows where the heart is; what the preferences are; what are the tastes; what is the real condition of the soul. We seek our friends in accordance with our tastes and preferences; our love to God is indicated by our love to his friends. Compare Psalms 139:21-22.
And of them that keep thy precepts - That obey thy law. On the sentiment here, compare the notes at Psalms 1:1. A man may determine much in regard to his own character by asking himself what is the character of his chosen friends and companions. A member of a church should regard it as a dark sign against himself in regard to his piety, if his chosen friends are taken from the world, and not from the professed friends of God; if he finds more pleasure in their society, and in the scenes where they meet, than he does in the society of Christians however humble, or in places where they assemble for prayer and praise.