But one in a certain place testified, saying, What is man, that thou art mindful of him? or the son of man, that thou visitest him? But one in a certain place - This one is David; and the certain place, Psalms 8:4, Psalms 8:5, Psalms 8:6. But why does the apostle use this indeterminate mode of quotation? Because it was common thus to express the testimony of any of the inspired writers; אמר ההוא amar hahu kethab, thus saith a certain scripture. So Philo, De Plant. Noe: Ειπε γαρ που, he saith somewhere; ειπε γαρ τις, a certain person saith. Thus even the heathens were accustomed to quote high authorities; so Plato, Tim.: Ὡς εφη τις, as a certain person saith, meaning Heraclitus. See in Rosenmuller. It is such a mode of quotation as we sometimes use when we speak of a very eminent person who is well known; as that very eminent person, that great philosopher, that celebrated divine, that inspired teacher of the Gentiles, the royal psalmist, the evangelical prophet, hath said. The mode of quotation therefore implies, not ignorance, but reverence.
What is man - This quotation is verbatim from the Septuagint; and, as the Greek is not as emphatic as the Hebrew, I will quote the original: מה אנוש כי תזכרנו ובן אדם כי תפקדנו mah enosh ki thizkerennu, uben Adam ki thiphkedennu; What is miserable man, that thou rememberest him? and the son of Adam, that thou visitest him? The variation of the terms in the original is very emphatic. Adam, אדם, is the name given to man at his creation, and expresses his origin, and generic distinction from all other animals. Enosh, אנוש, which signifies sick, weak, wretched, was never given to him till after his fall. The son of Adam means here, any one or all of the fallen posterity of the first man. That God should remember in the way of mercy these wretched beings, is great condescension; that he should visit them, manifest himself to them, yea, even dwell among them, and at last assume their nature, and give up his life to ransom them from the bitter pains of eternal death, is mercy and love indescribable and eternal.