Thus speaketh the LORD of hosts, saying, Execute true judgment, and shew mercy and compassions every man to his brother: And oppress not the widow, nor the fatherless, the stranger, nor the poor; and let none of you imagine evil against his brother in your heart.
This particular passage of scripture is given by the LORD of hosts. The hosts are the armies of God. Please note that it is written in the plural, hosts, and is not singular. So we can understand that the LORD has more than one army. As the LORD of hosts He instructs us to execute true judgment. We can tell when we are executing true judgment because it will be accompanied by mercy and compassions. Therefore it doesn’t matter how right I am in what I know about a situation if that knowledge is not accompanied by mercy and compassion. The LORD of the armies says that true judgment is accompanied by mercy and compassions. While wrong must be dealt with and corrected it should be done so with mercy and compassions. Wrong can be corrected while still loving and showing mercy and compassions for the one who committed the wrong.
Jesus Christ Himself dealt with wrong by showing mercy and compassion. It was His mercy and compassions for me that constrained Him to give His life on a cross for me, the one who was wrong.
Many people can get on the war path in a crusade against wrong. However it is an exception when someone can war against wrong while at the same time showing mercy and compassion to those caught up in the wrong. It takes some amount of maturity to be able to address and correct wrong while still experiencing feelings of mercy and compassion.
We are not to even imagine evil against our brother in our heart as we war against wrong. The purpose of warring against wrong is to correct the wrong and fill our brother with mercy and compassion so that they in turn can go and share mercy and compassion with others.