פּירוש אויף בראשית 4:4

וישע AND HE HAD REGARD— and He turned to; similarly in the next verse “He had no respect for his offering” means, “He did not turn to it.” Similarly, (Isaiah 17:8) ולא ישעה אל המזבחות which means “And he shall not turn towards the altars”; so also (Job 14:6) שעה מעליו “turn away from him” — disregard him.

וישע, according to Rashi, this word here means the same as: ויפן, “He turned (benignly);” it appears in this sense also in Exodus 5,9, where Pharaoh warns the Jewish people not to place their hopes in false prophets (Moses). This is difficult, as in our versions of Rashi he states there that the meaning is not the same as here, as the Torah uses the prefix ב there instead of the prefix אל.

וישע ה' אל הבל ואל מנחתו, “the Lord turned favorably to Hevel and to his offering;” this verse is the best answer to the heretics who deny the existence of an afterlife, as seeing that Hevel was murdered shortly after G–d is on record as having gratefully accepted his offering, what use would that have been to him seeing that the same G–d did not even protect him against being murdered by his own brother. We must therefore view this verse as telling us that by dint of his offering Hevel acquired a share in afterlife. [The concept of afterlife was new, as his father having introduced mortality of human beings through his sin had not yet done anything to at least acquire an afterlife. Ed.]