We must pursue good and avoid evil.

Seek good, and not evil, that ye may live: and so the LORD, the God of hosts, shall be with you, as ye have spoken.  Hate the evil, and love the good, and establish judgment in the gate: it may be that the LORD God of hosts will be gracious unto the remnant of Joseph. 

Amos 5:14-15

We must strive for justice in this world.

But let judgment run down as waters, and righteousness as a mighty stream. 

Amos 5:24