Sin not leading to death?

1 John 5:16 If anyone sees his brother sinning a sin which does not lead to death, he will ask, and He will give him life for those who commit sin not leading to death. There is sin leading to death. I do not say that he should pray about that.

17 All unrighteousness is sin, and there is sin not leading to death.

So, the wages of (all) sin is death. How is there a sin not leading to death? What is the only way, we as sinners, avoid death? What is death? Death is seperation from God! There is only one way we can be united with God, thats receiving His Son Jesus Christ. All sin confessed & brought to Jesus will be forgiven. The sin that cant be forgiven, is the by the one who refuses to confess their sins to the LORD. There is no other Savior but Jesus. Since even as christians, we all sin, we dont remain there. The Spirit convicts us of our sin, and we take it to Jesus. Jesus is our righteousness!