וַיֹּ֤אמֶר שְׁמוּאֵל֙ אֶל־שָׁא֔וּל לֹ֥א אָשׁ֖וּב עִמָּ֑ךְ כִּ֤י מָאַ֙סְתָּה֙ אֶת־דְּבַ֣ר יְהוָ֔ה וַיִּמְאָסְךָ֣ יְהוָ֔ה מִהְי֥וֹת מֶ֖לֶךְ עַל־יִשְׂרָאֵֽל׃ (ס)
E Shmuel disse a Shaúl: Não voltarei contigo, pois rejeitaste a palavra de Adonai, e Adonai te rejeitou de seres rei sobre Yisra'el. {ס}
Sforno
ולא שמע ה' בקולכם, on account of the desecration of His name that was part of their sin. Whenever a sin includes חילול השם, the desecration of G’d’s name, (seeing that is by definition something public) forgiveness without death of the penitent sinner is impossible. Not only that, but G’d’s decree had been formulated as an oath, something that made it irrevocable after both Joshua and Calev had made efforts to make the people reconsider their negative attitude by accusing G’d of hating them. As a matter of fact, even when they did repent afterwards, this was not genuine, but was based on their fear of punishment. As a result, such a repentance is not sufficient to cancel the punishment due in this life. Something similar had already occurred with Kayin, who also repented but only because he could not face the punishment in store for him. (Genesis 4,15) Both King Shaul, in respect of his failure to wipe out Amalek completely, (Samuel I 15,26) and the High Priest Eli (Samuel I 3,14) repented, but did so only out of their unwillingness to face their punishment.