1 Peter 3:15
But in your hearts revere Christ as Lord. Always be prepared to give an answer to everyone who asks you to give the reason for the hope that you have. But do this with gentleness and respect

To evangelize is to declare on the authority of God what he has done to save sinners, to warn men of their lost condition, to direct them to repent, and to believe in the Lord Jesus Christ.
Mark Dever