Matthew 28

vs.18  And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth.

vs.19   Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost :

vs.20  Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen.

Teach all nations means to "make Christians".  The following is an exhortation to all those who desire to become a son of God.