Matthew 28:18-20 KJV
And Jesus came and spake unto them, saying, All power is given unto me in heaven and in earth.  Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost:  Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you alway, even unto the end of the world. Amen.
Matthew 5:14-16 KJV
Ye are the light of the world. A city that is set on an hill cannot be hid.  Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house.  Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven.