Simplify: Worry
Jesus calls us to limit worry to the right proportion and resist worry that seeks to overwhelm or dominate our lives. In place of worry he directs us to seek first the kingdom and righteousness of God. We are called to love others, be generous and watch what God will do as a result.
Can we “not worry”?
Concern is appropriate when it is directed toward right things, kept within bounds, and causes us to do our proper duty. However, merimnao also expresses intense feelings of anxiety about issues of life, such as what to say when arrested for preaching the gospel (Matt. 10:19), about many less important things (Luke 10:41), or about the pressing daily matters of life.
Worry is inappropriate or wrong when it is misdirected, is in wrong proportion, or indicates a lack of trust in God. It is this latter sense that Jesus addresses here.