Matthew 25:35-46 (KJV) 36 Naked, and ye clothed me: I was sick, and ye visited me: I was in prison, and ye came unto me. 38 When saw we thee a stranger, and took thee in? or naked, and clothed thee 40 And the King shall answer and say unto them, Verily I say unto you, Inasmuch as ye have done it unto one of the least of these my brethren, ye have done it unto me.
Matthew 28:19-20 (KJV) 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: 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.
Mark 16:15-16 (KJV) 15 And he said unto them, Go ye into all the world, and preach the gospel to every creature. 16 He that believeth and is baptized shall be saved; but he that believeth not shall be damned.