[[[ A person would have to fall away completely from God and never look back to be lost forever. God can forgive anyone if they are repentant and sincere about it.]]]
You are wrong again, if one falls away God will take them back because of his love which you talk little about.
Do not fear, this is in the bible:-
Hebrews 9:12 “Neither by the blood of goats and calves but by His own blood He entered in once into the Holy place having obtained eternal redemption for us."
Can you not get your head around that or are you protecting as per usual, the truth will set you free.
Don't let HATE blind you Refreshed.