“Do they not err that devise evil? but mercy and truth shall be to them that devise good.”
The above verse starts with a rhetorical question, which is raised to make a point that those who devise evil will surely err from the right way. In other words, those who continue to dwell on evil thoughts and plan to put them into practice are certain to go astray from the truth and righteousness taught by God’s Word. So, we must always examine our desires, ideas and plans, as to whether they are good and acceptable in the light of God’s Word.
The Bible insists that “the heart of the sons of men is full of evil, and madness is in their heart while they live” (Ecclesiastes 9:3b). This is a clear warning that we are certain to err if we reject not every thought that is contrary to the wisdom and counsels of God’s Word.
However, if we will always yield to God’s truth, we will experience God’s mercy and be preserved from the evil way. Most of all, we shall bear the good fruits of the doctrines of grace and truth abundantly. As God’s mercy and truth lead our thoughts and actions, we will leave no room in our minds for the evil thoughts to take root, much less to compel us to devise evil.