Jn 6:39-40, Isa 61:1, Rom 10:13-15, Mt 28:19-20, Ezk 33:8-9, 1 Cor 9:16, Titus 1:3, 1 Thess 2:19

Jesus came to this earth to preach. The content of evangelism is that Jesus is the Christ. Only through evangelism, we can save the world. (Mk 1:38, 1 Cor 1:21)

Mk 1:38 And he said unto them, Let us go into the next towns, that I may preach there also: for therefore came I forth.

1 Cor 1:21 For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.

Jesus came to save His people on this earth through evangelism. (Jn 6:38-40)

Jn 6:38 For I came down from heaven, not to do mine own will, but the will of him that sent me. 39 And this is the Father’s will which hath sent me, that of all which he hath given me I should lose nothing, but should raise it up again at the last day. 40 And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day.

The Old Testament prophesied that Christ would come and preach the good news, that is, that Christ had come. (Isa 61:1)

Isa 61:1 The Spirit of the Lord God is upon me; because the Lord hath anointed me to preach good tidings unto the meek; he hath sent me to bind up the brokenhearted, to proclaim liberty to the captives, and the opening of the prison to them that are bound;

If people believe in Jesus as the Christ, they will be saved, but if no one preaches to them, they cannot hear the Gospel and cannot be saved. So, how beautiful are the feet of those who preach the gospel! (Rom 10:13-15)

Rom 10:13 For whosoever shall call upon the name of the Lord shall be saved. 14 How then shall they call on him in whom they have not believed? and how shall they believe in him of whom they have not heard? and how shall they hear without a preacher? 15 And how shall they preach, except they be sent? as it is written, How beautiful are the feet of them that preach the gospel of peace, and bring glad tidings of good things!

The last command Jesus gave us was evangelism.(Mt 28:29-20)

Mt 28:19 Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: 20 Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen.

If we do not share Christ with people, the blood will come back to us. (Ezk 33:8-9)

Ezk 33:8 When I say unto the wicked, O wicked man, thou shalt surely die; if thou dost not speak to warn the wicked from his way, that wicked man shall die in his iniquity; but his blood will I require at thine hand. 9 Nevertheless, if thou warn the wicked of his way to turn from it; if he do not turn from his way, he shall die in his iniquity; but thou hast delivered thy soul.

Woe to us if we do not preach the gospel. (1 Cor 9:16)

1 Cor 9:16 For though I preach the gospel, I have nothing to glory of: for necessity is laid upon me; yea, woe is unto me, if I preach not the gospel!

God revealed His Word through evangelism. (Titus 1:3)

Titus 1:3 But hath in due times manifested his word through preaching, which is committed unto me according to the commandment of God our Saviour;

Our true joy is to save souls through evangelism. (1 Thess 2:19)

1 Thess 2:19 For what is our hope, or joy, or crown of rejoicing? Are not even ye in the presence of our Lord Jesus Christ at his coming?