William Burkitt on Matthew 5:42

Our Saviour here presses the law of charity upon his disciples: this is two-fold; a charity in giving to them that beg, and a charity in lending to them that desire to borrow. Christianity obliges all those who have ability to abound in works of charity of all sorts and kinds whatsoever. He that is truly charitable, doth not only give, but lend; yea, sometimes lends, looking for nothing again. It is not enough to act charity of one sort, but we must be ready to act it in every kind, and to the highest degree that our circumstances and abilities will admit.

Giving is a god-like thing, he is the giver of every good and perfect gift; he gives before we ask; and we must imitate God in giving: namely, by giving what we give cheerfully, sincerely, discreetly, proportionably, universally, in obedience to God's command, and with an eye at his glory. And there is sometimes as great charity in lending, as there is in giving; many a poor family, by our lending them a small matter, may raise themselves into a condition to live comfortably and honestly in the world.