Primitive Christianity Revived, Again
Mic 6:8 He hath shewed thee, O man, what is good; and what doth the LORD require of thee, but to do justly, and to love mercy, and to walk humbly with thy God?
When I taught law I took great pains to make the point that as great as our legal system is, you can't count on it to "do justly" or dispense justice, the best you can hope for is to be treated fairly and unfortunately that doesn't happen often enough. Unlike Sharia law it does have room for Mercy and we can probably thank Micah for that.
However, I believe the most important thing about this verse is that it shows God's priority. He loves Mercy, but He requires Justice. For that very reason He had to pay the price for our transgressions. He could very easily have issued us a Pardon but for some reason that would not have been doing Justice. Maybe it would have required He pardon someone else if He was going to be Just or maybe it would not have enabled us to develop to the full extent of our capabilities if we didn't obtain a full understanding of the seriousness of our transgressions. Regardless of the reason, God's love of Mercy drove him to tears as Jesus wept over Jerusalem but it was His need to do justly that drove him to Golgotha to shed His blood for the forgiveness of our sins which Justice required.
When we truly understand the price that God paid to do justly because He loved mercy and our constant failure to do anything resembling it on a regular basis, only then will we be able to walk humbly with our God.