Mercy

Matthew 5:7 Blessed are those having mercy, because they shall be mercied.

Mercy for our brother was something which Yahweh asked of us in the Old Testament as well as the New. And mercy not only on them who may do us wrong, but also on those who are of humble means. Examples of this are found in Proverbs 14:20-22, 31, Proverbs 21:20-21, and Hosea 6:6. An example is found in the Exodus, when Moses encountered two Israelite men quarreling. Exodus Chapter 2:

“11 And it came to pass in those days, when Moses was grown, that he went out unto his brethren, and looked on their burdens: and he spied an Egyptian smiting an Hebrew, one of his brethren. 12 And he looked this way and that way, and when he saw that there was no man, he slew the Egyptian, and hid him in the sand. 13 And when he went out the second day, behold, two men of the Hebrews strove together: and he said to him that did the wrong, Wherefore smitest thou thy fellow? 14 And he said, Who made thee a prince and a judge over us? intendest thou to kill me, as thou killedst the Egyptian? And Moses feared, and said, Surely this thing is known.”

There was no care for the Egyptian, and he was even an Adamite. Yet Moses was astonished when he found two men of Israel quarreling, knowing that it was wrong for them to be doing so. Because Moses understood this difference, caring for Israel and not for the alien, he was appointed leader over all the children of Israel, to bring them out of the captivity in Egypt.

The Commandments

Yahweh proclaimed at Exodus 20:6 and also at Deuteronomy 5:10 that He showed mercy unto them "that love me, and keep my commandments."  

Mercy on Those who Stumble

Matthew 5:29 Now if your right eye entraps you, take it out and cast it from you, for it is better for you that one of your members would be lost and your whole body not be cast into Gehenna!

Gehenna is not what the romish church later described as hell, but rather, he who sins in this life is punished in the body. It is the body, not the spirit, which Christ says will be thrown into the fire of Gehenna. While Yahweh can indeed destroy the spirit of men also, His promise to us is that our spirits shall be preserved. Therefore Paul says of unrepentant sinners, for example in 1 Corinthians 5:5: “To deliver such an one unto Satan [the adversary in this world] for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus.”  

Paul also discusses that eternal struggle between the desires of the flesh, and the necessity for obedience to God, at length in Romans chapter 7 and elsewhere. Men must know that even if we fail, that the law is good and that we must strive to live up to it. However with the law, all men are condemned, so we must have mercy upon our brethren who fall short even beyond where we have fallen.