My son, if thou be surety for thy friend, if thou hast stricken thy hand with a stranger, Thou art snared with the words of thy mouth, thou art taken with the words of thy mouth. Do this now, my son, and deliver thyself, when thou art come into the hand of thy friend; go, humble thyself, and make sure thy friend. Give not sleep to thine eyes, nor slumber to thine eyelids. Deliver thyself as a roe from the hand of the hunter, and as a bird from the hand of the fowler.
Solomon warned against guarantying loans for someone else. If they do not fulfill their obligation, than the one that has guaranteed it, will be responsible for it. The Bible warns against helping others because we might be helping them to buy something which may not be God’s will to have, we might be encouraging them to purchase something that is beyond their means, or if they default for something that is not our own, our friendship could end and bitterness could begin. It would be better to give money outright, if there is a legitimate need.