In Matthew 6:15, Jesus says if we do not forgive others, our Father in heaven will not forgive us. I've heard conflicting interpretations of this passage. Some say this means our salvation can be lost if we don't forgive others, but others disagree. How do I know which interpretation is true?
Before we answer this question, we must first remember the words of 2Peter 1:
Peter reminds us that scripture always has one proper interpretation. Its meaning is not subject to our personal views or desires. In other words, we can’t make it mean whatever we want it to mean. Its meaning is determined by God Who authored the words for us. Peter says that only men “moved” by the Holy Spirit can bring forth scripture, and by the same token only the Holy Spirit can lead us to a proper interpretation of His own words.
Secondly, all believers possess the Teacher, the Holy Spirit, living in them as Jesus promised:
So all believers possess the Spirit of God, which means all believers possess the potential to know all scripture. Nevertheless, believers will not have a perfect understanding of the Bible this side of Heaven, because the Lord doesn’t reveal His whole counsel to every believer. As Paul says:
In the meantime, the Lord equips some within the church to teach others concerning the meaning of His word. The presence of teachers in the Church doesn’t replace a believer’s responsibility to study personally, but they will aid in our personal study, so we should seek them out wisely, as Paul says:
Differences of opinion concerning scripture simply evidence that we lack a full understanding of God’s word, and therefore when we encounter such difference in opinion, we return to scripture seeking clarification from the Lord. He may not provide that clarification immediately, but as we continue to seek Him in His word, the answers will come. Eventually, we receive a full understanding in our glorified state as Paul said in 1Cor 13.
Regarding Matthew 6, Jesus is speaking temporally, not eternally, meaning He's explaining how the Lord will respond to our mistakes while we live on earth. He's not speaking of how God will judge us after we die. We see this distinction when we consider the full implications of Jesus' comment and the context of His statement:
Jesus said if we forgive someone, then the Lord will forgive us. God's forgiveness of us is contingent on our forgiving others, but we know from other Scripture that believers have no power over the eternal fate of another person, for Christ alone is our Judge:
Furthermore, if our choice to forgive another determined our eternal destiny, then Jesus would be preaching a Gospel of works. To forgive someone is a work, and yet we know the Bible clearly states that we are forgiven on the basis of God's grace and not by our works:
Therefore, Scripture precludes us from interpreting Jesus' words as speaking of our eternal judgment. Instead, we must understand Jesus to be speaking in terms of earthly, temporal outcomes, not eternal outcomes. In other words, He’s not asking us to forgive someone from the penalty of their sin, for only God can do that. Jesus is asking us to be willing to restore relationships with those who have sinned against us and hurt us, for this is the good work we’ve been called to perform:
Jesus promises that if a believer forgives in this way, God will likewise forgive us in the same way. That is, the Lord will forgive us of our offenses against Him, which broke our fellowship with God. Our eternal salvation was never in question since no believer can sin their way out of salvation, for God’s grace is greater than our sin:
The believer is justified and forgiven the eternal consequences of sin (i.e., the Second Death) from the moment of our faith in Christ, therefore all mentions thereafter of receiving God's forgiveness during our life as a believer speak of the earthly consequences for sin.
Nevertheless, our sin on earth may still bring the possibility of God's discipline and other earthly consequences. The Lord may choose to hand out earthly discipline when we sin against Him, and the Bible says the discipline of the Lord drives us back into a godly walk with Him:
The means to avoiding God's discipline is to repent, confessing our sins while seeking the Lord’s forgiveness, which the Lord will grant us as John promises:
But Jesus says that if we are so hardhearted we hold other believers' sins against them and break fellowship with them, then the Lord will likewise withhold His forgiveness of our sins. Instead, He may bring us earthly discipline. Our eternal salvation remains secure, but our earthly life will suffer.
If we desire the Lord to forgive us of our daily missteps, we must be prepared to extend our forgiveness to other beleivers for their missteps against us.