John Gills Exposition of the Bible Commentary - Proverbs 27:9
Ointment and perfume rejoice the heart ,.... Meaning not the holy anointing oil for sacred use, or the perfume or incense offered on the altar of incense; but common oil or ointment used at entertainments, poured on the heads of the guests; and incense in censing of rooms, which were very delightful, pleased the senses, and so exhilarated the heart; so doth the sweetness of a man's friend by hearty counsel ; so the sweet and pleasant words, the wise and cordial counsel of a man's... read more
Matthew Henry's Complete Commentary - Proverbs 27:9-10
Here is, 1. A charge given to be faithful and constant to our friends, our old friends, to keep up an intimacy with them, and to be ready to do them all the offices that lie in our power. It is good to have a friend, a bosom-friend, whom we can be free with, and with whom we may communicate counsels. It is not necessary that this friend should be a relation, or any way akin to us, though it is happiest when, among those who are so, we find one fit to make a friend of. Peter and Andrew were... read more