Read Amos 5:6-7, 10-15
5:6 Seek the LORD and live, or he will break out against the house of Joseph like fire, and it will devour Bethel, with no one to quench it.
5:7 Ah, you that turn justice to wormwood, and bring righteousness to the ground!
5:10 They hate the one who reproves in the gate, and they abhor the one who speaks the truth.
5:11 Therefore because you trample on the poor and take from them levies of grain, you have built houses of hewn stone, but you shall not live in them; you have planted pleasant vineyards, but you shall not drink their wine.
5:12 For I know how many are your transgressions, and how great are your sins-- you who afflict the righteous, who take a bribe, and push aside the needy in the gate.
5:13 Therefore the prudent will keep silent in such a time; for it is an evil time.
5:14 Seek good and not evil, that you may live; and so the LORD, the God of hosts, will be with you, just as you have said.
5:15 Hate evil and love good, and establish justice in the gate; it may be that the LORD, the God of hosts, will be gracious to the remnant of Joseph.
Psalm 90 reminds us of a time when the people of Israel depended on God to provide them with 'steadfast love' - Amos writes 600 years later. The humble people who escaped slavery in Egypt have become the oppressors that they ran away from.
Teach me to seek good and not evil, to establish justice in all the small things I do today.