“Blessed are the merciful: for they shall obtain mercy.” Matthew 5:7
The merciful are happy. This, like the rest, is a paradox; for the merciful are not taken to be the wisest, nor are likely to be the richest. Yet Christ pronounces them blessed. Those are the merciful who are piously and charitably inclined to pity, help, and succour [help] persons in misery. A man may be truly merciful who has not wherewithal to be bountiful or liberal, and then God accepts the willing mind. We must not only bear our own afflictions patiently, but we must, by Christian sympathy, partake of the afflictions of our brethren. Pity must be shown and bowels of mercy put on, and being put on, we must put forth ourselves in contributing all we can for the assistance of those who are in misery. We must have compassion on the souls of others and help them; pity the ignorant and instruct them, the careless and warn them, those who are in a state of sin and snatch them as brands out of the burning. We must have compassion on those who are melancholy and in sorrow and comfort them; on those whom we have advantage against and not be rigorous and severe with them; on those who are in want and supply them. Nay, a good man is merciful to his beast.
Now, as to the merciful, they are blessed. It is said in the Old Testament, “Blessed is he that considereth the poor,” Ps. 41:1. Herein they resemble God, whose goodness is his glory. In being merciful as he is merciful, we are, in our measure, perfect as he is perfect. It is an evidence of love to God. It will be a satisfaction to ourselves to be in any way instrumental for the benefit of others. One of the purest and most refined delights in this world is that of doing good.
They shall obtain mercy; mercy with men when they need it. We know not how soon we may stand in need of kindness, and therefore we should be kind. But especially shall we obtain mercy with God, for with the merciful he will show himself merciful. The most merciful and charitable cannot pretend to merit, but must fly to mercy. The merciful shall find with God sparing mercy, supplying mercy, sustaining mercy, and mercy in that day. Nay, they shall inherit the kingdom prepared for them; whereas they shall have judgment without mercy who have shown no mercy. – Matthew Henry