Dealing in interest
Q: You know banks pay you interest if you have account with them and if use credit card you also pay interest to a bank. So if you receive and give interest(riba) would you be in hellfire forever? Below words from Quran says forever. Trade is like usury, but Allah hath permitted trade and forbidden usury. Those who after receiving direction from their Lord, desist, shall be pardoned for the past; their case is for Allah (to judge); but those who repeat (the offence) are companions of the Fire: they will abide therein (for ever). [2:275]
I thought only thing will put you in hellfire forever is shirk.