Islam is the only way in this life and the herafther
Verses from the Quran describes those how disbelieve in God Allah swt
39. As for those who disbelieve, their works are like a mirage in a desert. The thirsty assumes it is to be water. Until, when he has reached it, he finds it to be nothing, but there he finds God, Who settles his account in full. God is swift in reckoning.
As for those who disbelieved, their deeds are like a mirage in a desert. The thirsty one thinks it to be water, until he comes up to it, he finds it to be nothing) (24:39).
Allah then gave the example of ignorant disbelievers, simple in their ignorance. He said;
(Or (the state of a disbeliever) is like the darkness in a vast deep sea, overwhelmed by waves, topped by dark clouds, (layers of) darkness upon darkness: if a man stretches out his hand, he can hardly see it! And he for whom Allah has not appointed light, for him there is no light) (24:40).
Therefore, Allah divided the camp of the disbelievers into two groups, advocates and followers. Allah mentioned these two groups in the beginning of Surat Al-Hajj,
(And among mankind is he who disputes about Allah, without knowledge, and follows every rebellious (disobedient to Allah) Shaytan (devil) (devoid of every kind of good)) (22:3), and,
(And among men is he who disputes about Allah, without knowledge or guidance, or a Book giving light (from Allah)) (22:8).
40. Or like utter darkness in a vast ocean, covered by waves, above which are waves, above which is fog. Darkness upon darkness. If he brings out his hand, he will hardly see it. He to whom God has not granted a light has no light.