Treasures of wickedness - Property gained by wicked means.
Delivered from death - Treasures gained by robbery often bring their possessors to an untimely death; but those gained by righteous dealing bring with them no such consequences.
Righteousness - Including, perhaps, the idea of benevolence. Compare the use of δικαιοσύνη dikaiosunē in Matthew 6:1 (the older reading), and 2 Corinthians 9:9-10.