Psalms 62:9

Surely men of low degree are vanity -literally, “vanity are the sons of Adam,” but the word Adam here is used evidently to represent men, or the race. The same word is also employed particularly to represent common men, or men of the humbler rank, in contradistinction to the wordאישׁ'ı̂ysh- which is the other word used here, and rendered “men of high degree.” Compare, for this use of the word,Hosea 6:7. The same antithesis between the two words is found inIsaiah 2:9;Isaiah 5:15. The idea here is, that in the great matters which pertain to us, we cannot depend on men, and that our hope - our trust - must be in God.