In Psalm 55:22 and 1 Peter 5:7, the Bible enjoins us to, ‘cast our burden upon the Lord’. Care is a burden; it makes the heart sick. Worry can rob us of happiness. We often labour under the burden of senseless anxiety and care about tomorrow. Anxiety and care are very burdensome and too often sinful. That is why the Bible tells us to cast the burden upon the Lord; He alone is able to give us rest.
The best remedy against anxiety is to cast our burden upon God, believing His divine will to calm our spirit. To cast our burden upon God is to rest our trust in His providence and promise. His promise does not say He would keep us free from cares and anxiety but that He would give us enough grace to stand and resist those troubles that cause our anxieties, cares and unnecessary fears. If we commit our ways and works to Him, He promised to carry us in the arms of His power, as a nurse carries a child and will strengthen our spirit by His Spirit.