Today I was hearing by a preacher - salvation is a gift, you dont have to do any thing. Even if you dont read the bible or pray or attend a fellowship still you can make it to heaven. Once you accept Jesus then salvation part is finished and all things done after that are rewards. Even he translates that working out salvation with fear and trembling is nothing but just believing in Christ. Now lets assume that everything he says is true but a question remains in my heart.
Why would early believers have to endure so much persecution? They should have secretly believed
Christ and Escape persecution.
Or is that the early believers didn't understand that their salvation is only by grace?
I read in Rom 6:23 that the gift of God is eternal life through Jesus Christ our Lord. For the purpose of salvation, exactly what would you add to Jesus’ sacrifice? As to working out our own salvation with fear & trembleing, that is the part of our salvation having to do with learning to overcome the habit and dominion of sin in our lives.
An example of that might best be illustrated by noticing how God had provide Israel with deliverance from Egypt (From the world), but then they were to enter in to and inhabit Canaan.
Exo 3:17 And I have said, I will bring you up out of the affliction of Egypt unto the land of the Canaanites, and the Hittites, and the Amorites, and the Perizzites, and the Hivites, and the Jebusites, unto a land flowing with milk and honey (All their provision needed).
Jos 24:11 And ye went over Jordan, and came unto Jericho: and the men of Jericho fought against you, the Amorites, and the Perizzites, and the Canaanites, and the Hittites, and the Girgashites, the Hivites, and the Jebusites; and I delivered them into your hand. Going over Jordan didn’t represent entering heaven, it is the battles against the flesh denying Satan’s influence, and learning to occupy. Rom 8:37 Nay, in all these things we are more than conquerors through him that loved us. At this present time we are to grow in grace and truth as a part of becoming full overcomers as we learn to walk in victory through Christ, and that indeed provides reward.
You also ask why early Christians should have to suffer persecution.
2 Tim 3:12 Yea, and all that will live godly in Christ Jesus shall suffer persecution.
1 Pet 1:7 That the trial of your faith, being much more precious than of gold that perisheth, though it be tried with fire, might be found unto praise and honour and glory at the appearing of Jesus Christ:
2 Tim 2:12 If we suffer (Endure), we shall also reign with him: if we deny him, he also will deny us.