The Quran

۞ وَاتلُ عَلَيهِم نَبَأَ ابنَي آدَمَ بِالحَقِّ إِذ قَرَّبا قُربانًا فَتُقُبِّلَ مِن أَحَدِهِما وَلَم يُتَقَبَّل مِنَ الآخَرِ قالَ لَأَقتُلَنَّكَ ۖ قالَ إِنَّما يَتَقَبَّلُ اللَّهُ مِنَ المُتَّقينَ

Muhammad Asad

And convey unto them, setting forth the truth, the story of the two sons of Adam¹-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.

I.e., the story of Cain and Abel, mentioned in Genesis iv, 1-16. The pronoun in "tell them" refers to the followers of the Bible, and obviously connects with verse 15 of this surah, "Now there has come unto you Our Apostle, to make clear unto you much of what you have been concealing [from yourselves] of the Bible", the meaning of which has been explained in note 28 above. The moral of this particular Biblical story - a moral which the followers of the Bible have been "concealing from themselves" - is summarized in verse 32.