John 16:33 AMP
I have told you these things, so that in Me you may have [perfect] peace and confidence. In the world you have tribulation and trials and distress and frustration; but be of good cheer [take courage; be confident, certain, undaunted]! For I have overcome the world. [I have deprived it of power to harm you and have conquered it for you.]
1 Peter 5:7 AMP
Casting the whole of your care [all your anxieties, all your worries, all your concerns, once and for all] on Him, for He cares for you affectionately and cares about you watchfully.
Philippians 4:6 AMP
Do not fret or have any anxiety about anything, but in every circumstance and in everything, by prayer and petition ( definite requests), with thanksgiving, continue to make your wants known to God.
Luke 12:25 AMP
And which of you by being overly anxious and troubled with cares can add a cubit to his stature or a moment [unit] of time to his age [the length of his life]?