God's most repeated message to his people across all of Scripture is a direct response to anxiety: do not be afraid, because I am here.
Isaiah 43:1–2 "But now thus saith the LORD that created thee, O Jacob, and he that formed thee, O Israel, Fear not: for I have redeemed thee, I have called thee by thy name; thou art mine. When thou passest through the waters, I will be with thee; and through the rivers, they shall not overflow thee."
Deuteronomy 31:8 "And the LORD, he it is that doth go before thee; he will be with thee, he will not fail thee, neither forsake thee: fear not, neither be dismayed."
Romans 8:38–39 "For I am persuaded, that neither death, nor life, nor angels, nor principalities, nor powers, nor things present, nor things to come, Nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which is in Christ Jesus our Lord."
Hebrews 13:5–6 "Let your conversation be without covetousness; and be content with such things as ye have: for he hath said, I will never leave thee, nor forsake thee. So that we may boldly say, The Lord is my helper, and I will not fear what man shall do unto me."
2 Timothy 1:7 "For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind."