Note: the connection of thought between this verse and Deuteronomy 10:12 has been noted by many. Do the three requirements in Micah correspond to the five requirements of Deuteronomy, but in reverse order? To do justice is to keep the commandments in service to God, to love the Lord is to love His quality of kindness, and to walk humbly is to walk in the fear of God.
Micah 6:8
He has told you, O man, what is good; and what does the LORD require of you but
A. to do justice,
B. and to love kindness,
C. and to walk humbly with your God?
Deuteronomy 10:12
And now, Israel, what does the LORD your God require of you, but
C’. to fear the LORD your God, to walk in all his ways,
B’. to love him,
A’. to serve the LORD your God with all your heart and with all your soul, 13 and to keep the commandments and statutes of the LORD, which I am commanding you today for your good?
This is truly excellent.
A further insight: from section A’, to “serve” and to “keep” are exactly the two words from Gen 2:15. God placed Adam in the Garden to “serve (abad)” and to “keep (samar).” Thus to “do justice” is to do exactly what Adam was commanded to do in the Garden.