2 Tim 4:5, Acts 20:24, Titus 1:2-3, Col 4:3, Phil 1:15-18
God revealed the word of God through evangelism. Evangelism is testifying that Jesus is the Christ prophesied in the Old Testament. He entrusted this evangelism to us. (Titus 1:2-3)
Titus 1:2 In hope of eternal life, which God, that cannot lie, promised before the world began; 3 But hath in due times manifested his word through preaching, which is committed unto me according to the commandment of God our Saviour;
We must always preach the gospel, out of season or out of season. (2 Tim 4:1-2,5)
2 Tim 4:1 I charge thee therefore before God, and the Lord Jesus Christ, who shall judge the quick and the dead at his appearing and his kingdom; 2 Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all long suffering and doctrine. 5 But watch thou in all things, endure afflictions, do the work of an evangelist, make full proof of thy ministry.
To proclaim that Jesus is the Christ is more precious than our lives, and we live for this. (Acts 20:24, Col 4:3)
Acts 20:24 But none of these things move me, neither count I my life dear unto myself, so that I might finish my course with joy, and the ministry, which I have received of the Lord Jesus, to testify the gospel of the grace of God.
Col 4:3 Withal praying also for us, that God would open unto us a door of utterance, to speak the mystery of Christ, for which I am also in bonds:
We rejoice when it is proved that Jesus is the Christ in any way. (Phil 1:15-18)
Phil 1:15 Some indeed preach Christ even of envy and strife; and some also of good will: 16 The one preach Christ of contention, not sincerely, supposing to add affliction to my bonds: 17 But the other of love, knowing that I am set for the defence of the gospel. 18 What then? notwithstanding, every way, whether in pretence, or in truth, Christ is preached; and I therein do rejoice, yea, and will rejoice.