Is it possible you really can not understand the scripture?
There once was a pastor that said he had enough sin in his prayers for God to send him to hell...
Men spend so much time comparing themselves to other men, they forget the standard is not men but a Holy , Perfect , God
Scripture does not teach that there are venial sins and mortal sin..ALL sin is an offense to a Holy God.. Even a pencil taken as a child is an abomination to God and enough to condemn one to hell ..
The scripture is clear to those of us that study it.. committing one sin is as offensive to God as violating all of them..
Isaiah was a priest that loved God.. yet when God revealed Himself to him..what was Isaiah response ?
Isa 6:5 Then said I, Woe [is] me! for I am undone; because I [am] a man of unclean lips, and I dwell in the midst of a people of unclean lips: for mine eyes have seen the King, the LORD of hosts.
THAT my friend is the response of men that have met God.. a knowledge they are filthy before a holy God and deserve the fires of hell...
Even talking back to your parents, is as offensive to God as murder .. the laws are the laws.. there is no "good time" there is only hell.
Jesus said, "Truly, truly, I say to you, he who hears My word, and believes Him who sent Me, has eternal life, and does not come into judgment, but has passed out of death into life. (John 5:24)
Repent, therefore, of this wickedness of yours, and pray to the Lord that, if possible, the intent of your heart may be forgiven you. (Act 8:22)