Albert Barnes Commentary Psalms 119:63

"I am a companion of all them that fear thee, And of them that observe thy precepts." — Psalms 119:63 (ASV)

I am a companion of all them that fear thee - I find my associates and friends among those who worship you, 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 the tastes are, and 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 .

And of them that keep thy precepts - That obey your law. Regarding this sentiment, compare the notes at Psalms 1:1. A man may determine much regarding 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 regarding his piety if his chosen friends are taken from the world and not from the professed friends of God; it is also a dark sign 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.