Preach.

“Their line has gone out through all the earth, and their words to the end of the world. In them He has set a tabernacle for the sun, which is like a bridegroom coming out of his chamber, and rejoices like a strong man to run its race. Its rising is from one end of Heaven, and its circuit to the other end; And there is nothing hidden from its heat.” (Psalm 19:4-6)

“Go into all the world and preach the Gospel to every creature” (Mark 16:15)