'Anxiety' in the Bible

But I want you to be free from concern. The unmarried man is concerned about the things of the Lord, how he may please the Lord;

For I wrote to you out of great distress and with an anguished heart, and with many tears, not to cause you sorrow but to make you realize the [overflowing] love which I have especially for you.

His affection is greater than ever as he remembers the obedience [to his guidance] that all of you exhibited, and how you received him with the greatest respect.

Besides those external things, there is the daily [inescapable] pressure of my concern for all the churches.

Do not be anxious or worried about anything, but in everything [every circumstance and situation] by prayer and petition with thanksgiving, continue to make your [specific] requests known to God.