The reward of eternal life in the kingdom of God is not a reward that is earned by good works, it is a reward for obeying God's command to repent and surrender one's life to Jesus Christ as their personal Lord and Savior. It is a reward for accepting God's gracious offer of the gift of salvation/eternal life (Ephesians 2:8-9, Romans 6:23, Matthew 22:1-14, Titus 2:11). It's not earned, it's a gracious gift that we receive through faith.
Yes, you have this much right. We have eternal life from the moment we believe and have been born again. But you also believe, (even though you aren't saying so here) that our eternal life from the moment we have been born again is not ETERNAL! Since you don't believe in ETERNAL SECURITY for all who have been born again, you think born again believers shall not have eternal life until we stand before God at the GWTJ.
But, scripture speaks of other kinds of rewards for believers as well. Such as in the following passage...
1 Corinthians 3:11 For no other foundation can anyone lay than that which is laid, which is Jesus Christ. 12 Now if anyone builds on this foundation with gold, silver, precious stones, wood, hay, straw, 13 each one’s work will become clear; for the Day will declare it, because it will be revealed by fire; and the fire will test each one’s work, of what sort it is. 14 If anyone’s work which he has built on it endures, he will receive a reward. 15 If anyone’s work is burned, he will suffer loss; but he himself will be saved, yet so as through fire.
I believe "the Day" here is the day of judgment when Jesus returns, as described in Matthew 25:31-46. We can see here a description of believers receiving a reward if their work or deeds are such that they were found to be enduring. And you can see that any other kind of work "is burned" and the person "will suffer loss" of reward, but they still "will be saved" and have eternal life.
You might disagree, that this passage is referring to something that will happen on the day Jesus returns, so I will back that up by showing what Jesus Himself said about believers receiving rewards beyond eternal life. But, I wanted to first show this passage to prove that believers will be given other rewards besides the ultimate reward of eternal life.
Yes, Scripture does say that faithful saints (born again believers) are rewarded in this life, also chastened. When we read the whole context in 1Cor 3 we learn there was a division among believers in the church. They disagreed over who was greater, some saying I am of Paul and others saying I am of Apollos. But both men were ministers according to the grace of God bestowed upon them, and through the ministry of both men people were being eternally saved, but some also remained in unbelief. So, Paul tells them, I have planted and Apollos has watered for the building up of the Church. Both the one who plants and the one who waters "
shall receive his own reward according to his own labour".
1 Corinthians 3:9-11 (KJV) For we are labourers together with God: ye are God's husbandry,
ye are God's building. According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon.
But let every man take heed how he buildeth thereupon. For other foundation can no man lay than that is laid, which is Jesus Christ.
Paul is very clear, every man seeking to be a "masterbuilder" are God's husbandry is building according to grace given by God. Every man seeking to build for God is building upon the foundation of Jesus Christ.
1 Corinthians 3:12-15 (KJV) Now if any man build upon this foundation gold, silver, precious stones, wood, hay, stubble; Every man's work shall be made manifest: for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is. If any man's work abide which he hath built thereupon, he shall receive a reward. If any man's work shall be burned, he shall suffer loss: but he himself shall be saved; yet so as by fire.
Sometimes building upon the foundation of Christ produces faithful saints, but some who hear of Christ also remain in darkness and unbelief. Paul likens building the Kingdom of God through the gospel of Jesus Christ as our trial of faith in this age, and our work that produces gold, silver, precious stones, wood, hay and stubble that shall be made known through the fiery trial. When our good work produces believers, our work abides and that is our reward. But when our good work of faith produces nothing but bad that sort will be burned up! And though we suffer loss because our work of faith seems to be in vain because it shall be burned up, we shall still be saved as though by fire.
Our reward in this life is the knowledge that our work is not in vain because we know the Kingdom of God through proclaiming the Gospel of Christ is being built as long as we remain faithful to do all that God has ordained for us in this life. Now we have a down payment so to speak, that is ETERNAL spiritual life through the Spirit of Christ in us, and when this world ends, we shall receive the FULL REWARD of IMMORTAL/INCORRUPTIBLE physical body made alive through our eternal spirit that Christ will bring back with Him. Then once again as complete living soul we shall live with Christ forever on the new earth.
1 Peter 4:11-14 (KJV) If any man speak, let him speak as the oracles of God; if any man minister, let him do it as of the ability which God giveth: that God in all things may be glorified through Jesus Christ, to whom be praise and dominion for ever and ever. Amen.
Beloved, think it not strange concerning the fiery trial which is to try you, as though some strange thing happened unto you: But rejoice, inasmuch as ye are partakers of Christ's sufferings; that, when his glory shall be revealed, ye may be glad also with exceeding joy. If ye be reproached for the name of Christ, happy are ye; for the spirit of glory and of God resteth upon you: on their part he is evil spoken of, but on your part he is glorified.
So, in the following parable about His return, Jesus indicates that there will be varying rewards given to believers when He returns.
Luke 19:13 (KJV) And he called his ten servants, and delivered them ten pounds, and said unto them,
Occupy till I come.
Luke 19:15 (KJV) And
it came to pass, that when he was returned, having received the kingdom, then he commanded these servants to be called unto him, to whom he had given the money, that he might know how much every man had gained by trading.
In the parable the ten servants represent the church as it existed before preaching the Gospel unto all the nations of the world. Christ says that while He is gone from this world, they were to be busy (occupy) building the Kingdom by proclaiming the Kingdom of God has come through Him. You're reading the parable as though Christ is speaking of His return at the end of this world, but the parable is about how the Kingdom of God proclaimed through the gospel of Christ is built when His people are faithfully preaching of Him. In the beginning of the church, the servants of the nobleman were obstructed by the citizens (Jews) who sent a message saying, "
We will not have this man to reign over us".
The nobleman (Christ) returned after receiving the Kingdom that He received when He ascended to heaven and was given the everlasting Kingdom that can never be destroyed. (Dan. 7:13-14)
As Christ promised before departing this world, He has come again to us by sending His Spirit to be in us.
The parable is not about the second coming of Christ and our receiving reward(S) according to our good works. The parable speaks of how we work to build the Kingdom of God through the Gospel of Christ in this age. When we are faithful in much in this life, then in this life we will be given greater authority in this life because much has been gained for the Kingdom of God. But to them that show little faith in doing little even the little they have shall be taken from them. And all those enemies of Christ who did not desire Him to reign over them will be SLAYED, not burned up as they shall at the GWTJ.
John 14:16-18 (KJV) And I will pray the Father, and
he shall give you another Comforter, that he may abide with you for ever; Even the Spirit of truth; whom the world cannot receive, because it seeth him not, neither knoweth him: but ye know him; for he dwelleth with you, and shall be in you. I will not leave you comfortless:
I will come to you.
Christ has received the Kingdom of God and through His Spirit He has come again to whosoever has been born again.
Your claim that "We NEVER read of reward(S) for believers at the judgment. There is ALWAYS only one REWARD, and that is the same REWARD that every believer shall receive at the end of this world." is clearly false. Both Jesus and Paul clearly taught that some believers will receive rewards even beyond the reward of eternal life in the kingdom of God that we will all receive.
NO, neither Jesus nor Paul teach believers will receive reward(S) beyond the ONE GREAT REWARD in the coming Kingdom of God. Now, in this life born again believers possess eternal spiritual life through Christ's Spirit, and at the end of this world when Christ comes again, we shall possess both immortal/incorruptible body of flesh made alive through our eternal spirit that shall return with Christ.