Can you please show us from Scripture the distinction between mortal and venial sin?
I’m sure your point is that all sin is abhorrent to God, and excludes the sinner from His eternal presence,
correct?
A person indwelt by the Holy Spirit cannot commit a mortal sin. The only mortal sin is blasphemy of the Holy Spirit prior to being saved.
1 John 5:16-17: "If any one sees his brother committing what is not a mortal sin, he will ask, and God will give him life for those whose sin is not mortal. There is sin which is mortal; I do not say that one is to pray for that. All wrongdoing is sin, but there is a sin which is not mortal."
Luke 12:47-48: "And that servant who knew his master's will, but did not make ready or act according to his will, shall receive a severe beating. But he who did not know, and did what deserved a beating, shall receive a light beating. Every one to whom much is given, of him will much be required; and of him to whom men commit much they will demand the more."