“Hear, ye children, the instruction of a father, And attend to know understanding. For I give you good doctrine, Forsake ye not my law. For I was my father's son, Tender and only beloved in the sight of my mother. He taught me also, and said unto me, Let thine heart retain my words: Keep my commandments, and live. Get wisdom, get understanding: Forget it not; neither decline from the words of my mouth. Forsake her not, and she shall preserve thee: Love her, and she shall keep thee. Wisdom is the principal thing; therefore get wisdom: And with all thy getting get understanding. Exalt her, and she shall promote thee: She shall bring thee to honour, when thou dost embrace her. She shall give to thine head an ornament of grace: A crown of glory shall she deliver to thee.”
Proverbs 4:1-9 KJV
https://bible.com/bible/1/pro.4.1-9.KJV
God is With You
Throughout the Bible, there are various moments when God tells someone to not be afraid. Each one comes at a time when the hearer has every reason to be very afraid.
In one instance, Joshua, the leader of Israel after the death of Moses, was taking the Israelites to their promised land (see: Exodus 3). He was leading over one million people to a place God had promised, and it meant going through some overwhelming and terrifying situations.
In the midst of this, God commanded Joshua to do two things:
Obey the Word of God and, be strong and courageous because the Lord was with them. (See: Joshua 1:7-9)
In Matthew 28, Jesus says something similar just after His resurrection. He is with His eleven disciples and He tells them:
“All authority in heaven and on earth has been given to me. Go, therefore, and make disciples of all nations, baptizing them in the name of the Father, and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you, and behold, ...