For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
A missionary goes into all the world to preach the gospel. First Corinthians 15:1-4. That Christ died for our sins, according to the scriptures, that He was buried and rose again on the third day, according to the scriptures.
That now salvation is a free gift to all who believe on Jesus alone apart from works for the free gift of eternal life.
Romans 6:23 For the wages of sin is death, but the GIFT of God is ETERNAL LIFE, through Jesus finished work on the cross.
The GIFT of God is eternal life. Romans 1:16. For I am not ashamed of the gospel of Christ, for it is the POWER Of God unto salvation to everyone that BELIEVETH, to the Jew first, and also to the Greek.
Our mission as missionarys is to get as many people into heaven as we can. Preaching the GOOD NEWS of the Gospel.
John 3:18. Believers are no longer condemned to hell, but unbelievers are condemned already because they have not believed on the name of the Son of God.
Romans 4:5-8. Romans 3:26-28. John 10:28-29. Double eternal security of the believer.
Missionaries preach the gospel to bring as many as we can into heaven.
Missionaries are both evangelist and may start new churches of bible believers.
We preach salvation by grace apart from any works. Romans 11:6. We preach John 3:16-18. We preach the gospel so that people can hear the gospel and believe the gospel for the free GIFT of eternal life. First John 2:2.
First Corinthians 1:18 For the preaching of the cross is to them that perish, foolishness, but unto us who are saved it is the POWER of God.
First Corinthians 1:21 For after that, by the wisdom of God, the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that BELIEVE>