Peace belH.
Please look at the context. Verses 4 90 to 115 are dealing with rules of war, friendship...Then God goes on to say
[4116[
God does not forgive idol worship (if maintained until death),* and He forgives lesser offences for whomever He wills. Anyone who idolizes any idol beside God has strayed far astray.
Otherwise you might as well take [ 4115}
As for him who opposes the messenger, after the guidance has been pointed out to him, and follows other than the believers' way, we will direct him in the direction he has chosen, and commit him to Hell; what a miserable destiny!
Then say this is also an unforgivable sin?
All sins can be forgiven,if one sincerely repents before death.
Peace.
Peace,
Help me out here...see the verse 92 below
492
And it is not for a believer to kill another believer except by accident. And whoever kills a believer by accident, then he shall free a believing slave, and give compensation to the family; except if they remit it. If he was from a people who are enemies to you, and he was a believer, then you shall free a believing slave. And if he was from a people with whom you have a covenant, then a compensation to his family, and free a believing slave. Whoever does not find, then the fasting of two months sequentially as a repentance from God; for God is Knowledgeable, Wise.
492
Then see the verse after
493
And whoever kills a believer intentionally, then his recompense shall be Hell, abiding therein, and God will be angry with him, and curse him, and for him is prepared a great retribution.
493
What is the punishment for killing a believer intentionally?