EVANGELIZE

You cannot evangelize in a doctrinal vacuum (Anonymous).

For everyone who calls on the name of the Lord will be saved. But how are they to call on Him in whom they have not believed? And how are they to believe in Him of whom they have never heard? And how are they to hear without someone preaching? And how are they to preach unless they are sent? As it is written, "How beautiful are the feet of those who preach the good news!" But they have not all obeyed the gospel. For Isaiah says, "Lord, who has believed what he has heard from us?" So faith comes from hearing, and hearing through the word of Christ (Romans 10:13-17).

A hymn to read, sing, play, hum, or whistle to the glory of God:  Rock of Ages, Cleft for Me (Augustus M. Toplady, 1776).