Then the eleven disciples went to Galilee, to the mountain where Jesus had told them to go. When they saw him, they worshiped him; but some doubted. Then Jesus came to them and said, “All authority in heaven and on earth has been given to me. Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.
Matthew 28:16-20 NIV
Jesus gave us (believers) the clear instruction to proclaim and teach His Word and to baptize them.
He has all authority in Heaven and on Earth and is with us always.
This means that we don’t have to fear, because the Creator with all authority is with us.
With the absence of fear, we can now proclaim the Gospel with boldness.