﴿ ۞ وَٱتْلُ عَلَيْهِمْ نَبَأَ ٱبْنَىْ ءَادَمَ بِٱلْحَقِّ إِذْ قَرَّبَا قُرْبَانًۭا فَتُقُبِّلَ مِنْ أَحَدِهِمَا وَلَمْ يُتَقَبَّلْ مِنَ ٱلْءَاخَرِ قَالَ لَأَقْتُلَنَّكَ ۖ قَالَ إِنَّمَا يَتَقَبَّلُ ٱللَّهُ مِنَ ٱلْمُتَّقِينَ ﴾

“AND CONVEY unto them, setting forth the truth, the story of the two sons of Adam -how each offered a sacrifice, and it was accepted from one of them whereas it was not accepted from the other. [And Cain] said: "I will surely slay thee!" [Abel] replied: "Behold, God accepts only from those who are conscious of Him.”

Whatever a man receives in this world is bestowed by God. Therefore, being jealous of a person on seeing him well situated in life and then inflicting harm on him amounts to trying to nullify God’s plan. Such a person is to some extent given the scope to do whatever he likes in this world of trial, but in the eyes of God, he is the worst sinner. Abel drew the attention of his elder brother, Cain, to this fact. This created some hesitation in his mind. He realised that he was bent on killing his younger brother without any justification. But the feeling of jealousy in him did not cool down. He invented excuses to justify his action. Ultimately, his inner struggle resolved itself and rest in his self-devised justification and he proceeded to kill his brother. The voice of conscience is the voice of God. A question arising in a man’s conscience about any action of his amounts in fact to his facing a test. A man is successful if he gives a positive response to the voice of his conscience, but if in taking the shelter of false excuses he suppresses the voice of his conscience, then he has failed.