What the Holy Bible says about Evangelism:
37 Then he said to his disciples, “The harvest is plentiful but the workers are few. 38 Ask the Lord of the harvest, therefore, to send out workers into his harvest field.” (Matthew 9: 37-38)
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, 16 keeping a clear conscience, so that those who speak maliciously against your good behavior in Christ may be ashamed of their slander. 17 For it is better, if it is God’s will, to suffer for doing good than for doing evil. (1 Peter 3: 15-17)