If this concept of somebody paying for other's sins does not work in this life how can it work in next life?

A case for Christianity:

Protestant reformer Martin Luther, writing in the spirit of Jesus' statement, taught: "Be a sinner and sin vigorously; but even more vigorously believe and delight in Christ who is victor over sin, death and the world.... It is sufficient that we recognize through the wealth of God's glory the lamb who bears the sins of the world; from this sin does not sever us, even if thousands, thousands of times in one day we should fornicate or murder" (letter to Philip Melanchthon, August 1, 1521). Humorist Jules Feiffer has bitingly satirized Luther's position: "Christ died for our sins. Dare we make his martyrdom meaningless by not committing them?"

https://www.youtube.com/watch?v=grDPJmb3gAs

https://www.youtube.com/watch?v=Y3N4ymHO-eA

Achmad(or mustafa or ali or any other arab name u ve taken), your intention seems clear.but have you ever pondered upon one thing, had people of the jewish faith  made a anti-plagiarism law in 0 CE both the bible and koran had never been written ,they are just some stone age books of a wild,intolerant,misogynist folk (remember israel at that time was like afghanistan of out times).the concept of one god was there thousands of years before that mohammed dude even in this backward part of the world .that mohammad dude just wanted to consolidate the power of the arab tribes who were fractioned and for that he 'borrowed' the jewish story and put his name(and u can see how bad he was as a storyteller that the stories were so distorted) as the LAST MESSENGER so that none after him may claim that and disturb his authority.
but sadly u guys are not allowed to think ,thats why u ppl are always looking in the books and hearing the sub-human intellect molvis to even scratch your crotch.

Respected Shiva ji: Have you studied Sanatana Dharma? Does not it condemn idol worship too?

Keep up the good work brothers.

Sanskrit: "Dev maha osi"
English: "God is verily great" (Atharvaveda 20:58:3)

Sanskrit: "Ma cid anyad vi sansata sakhayo ma rishanyata"
English: "O friends, do not worship anybody but Him, the Divine One. Praise Him alone." (Rigveda 8:1:1)

Same God is great is in Islam, in Arabic Allahu Akbar. There is no difference in the message.

The message of God is one.

God please guide us and protect us from hell.

"One planet, one human race, one love, one God."

https://www.youtube.com/watch?v=fAc_Os0BGoI

Satan is very smart. He tells us human beings to progress in terms of this life. For an example in last 100 years we have used our brain and have achieved so much. We have invented so many things but in terms of our religion we have not progressed much. Majority of people are still following what their ancestors were following.
Why are we not using our intelligence when it comes to our salvation? Why are people still worshipping Cross or Buddha or an Idol when we know they are false dieties?
"GOD is not a man, that HE should lie, Nor a son of man, that HE should repent; Has HE said, and will HE not do it? Or has HE spoken, and will HE not make it good?" [The Bible, Numbers : 23:19]

Brahma Sutra of Hinduism:
Sanskrit: "Ekam Brahm, dvitiya naste neh na naste kinchan"
English: "There is only one GOD, not the second; not at all, not at all, not in the least bit."