Do they not err that devise evil? But mercy and truth shall be to them that devise good.
– Proverbs 14:22
The word for err means to go astray and to devise is to plot or plan. The first phrase refers to the outcome of their plans. They go astray because they plan evil. These are not accidentally or carelessly getting into the wrong way, but are plotting and contriving wickedness (Proverbs 3:29; 6:14). The phrase, mercy and truth, speaks of God’s favor and blessing (Psalm 25:10; 61:7). Here it is the outcome or reward that comes to those who devise good.