“The beginning of the gospel of Jesus Christ, the Son of God; As it is written in the prophets, Behold, I send my messenger before thy face, Which shall prepare thy way before thee. The voice of one crying in the wilderness, Prepare ye the way of the Lord, Make his paths straight. John did baptize in the wilderness, and preach the baptism of repentance for the remission of sins. And there went out unto him all the land of Judæa, and they of Jerusalem, and were all baptized of him in the river of Jordan, confessing their sins. And John was clothed with camel's hair, and with a girdle of a skin about his loins; and he did eat locusts and wild honey; and preached, saying, There cometh one mightier than I after me, the latchet of whose shoes I am not worthy to stoop down and unloose. I indeed have baptized you with water: but he shall baptize you with the Holy Ghost.”
Mark 1:1-8 KJV
https://bible.com/bible/1/mrk.1.1-8.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, ...