Which of you by worrying can add one cubit to his stature?
Matthew 6:27
Embedded in Jesus’ words about worry, is a the common sense reason not to. Worry doesn’t help.
Worry does not change any circumstance. If worry changes anything, it changes the worriers, and not for the better but for the worse. Jesus’ illustration about worry in (v.27) was about one who worries about his height. And as we all know worrying about one’s height does not make one taller (or shorter if one is worried about being too tall). The same is true about any other worrisome matter about which we can do nothing. The only thing worry can do is wear us down mentally, emotionally, and even spiritually.
What if the matter is something we can do something about? Then do something—but not while worrying. Since the greater context of Jesus’ warning was about worrying over money, we are responsible to do the best we can financially.
To be fair and honest, however, ceasing to worry is easier said than done, since worry is generally involuntary. Who sets out to worry intentionally? We just do—usually about the unknown. It is natural to worry to some degree, for instance, while waiting for results of a medical test. Simply determining not to worry usually doesn’t help. What does? Paul tells us in Philippians 4:6-8.
6 Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God;
When we are anxious we need to be intentional about turning to God in prayer—in everything, meaning nothing is too large or small. Tell God what you are feeling anxious about. Be thankful that God knows, cares, and is able.
7 and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.
The promise in (v.7) is not to change the circumstance (though God can if He so chooses). The promise is God’s peace. God’s peace can be so calming that we are surprised that we are not more anxious. And do not miss that fact that this is because of the Lord Jesus.
8 Finally, brethren, whatever things are true, whatever things are noble, whatever things are just, whatever things are pure, whatever things are lovely, whatever things are of good report, if there is any virtue and if there is anything praiseworthy--meditate on these things.
Lastly, (v.8) tells us to redirect our thoughts away from our fears and towards whatever is true, noble, just, etc. The peace of God comes to us when our thoughts are on truth rather than on what is unknown.