The Angels went to Ibrahim and then to Lut, may peace be upon them both

When Lut, peace be upon him, asked Allah to help him against them, Allah sent angels to help him. They first came to Ibrahim in the form of guests, so he offered them hospitality in the appropriate manner. When he saw that they had no interest in the food, he felt some mistrust of them and was fearful of them. They started to calm him down and gave him the news of a righteous son born by his wife Sarah, who was present, and she was astonished by this, as we have already explained in our Tafsir of Surat Hud and Surat Al-Hijr. When they brought this news to Ibrahim and told him that they were sent to destroy the people of Lut, he began to speak up for them, hoping to win more time for them so that they might be guided by Allah. When they said, "We have come to destroy the people of this township,"

قَالَ إِنَّ فِيهَا لُوطاً قَالُواْ نَحْنُ أَعْلَمُ بِمَن فِيهَا لَنُنَجِّيَنَّهُ وَأَهْلَهُ إِلاَّ امْرَأَتَهُ كَانَتْ مِنَ الْغَـبِرِينَ

Commentary

وَلُوطًا إِذْ قَالَ لِقَوْمِهِ إِنَّكُمْ لَتَأْتُونَ الْفَاحِشَةَ (And [ We sent ] Sayyidna Lut (علیہ السلام) when he said to his people, "Indeed you commit the shameful act - 29:28). Here Sayyidna Lut (علیہ السلام) has described three vicious sins of his people. One, unnatural offence of man with man; two, highway robbery against travelers; and three, commitment of sin openly before others in their group meetings. There is no specification of the third sin in the Holy Qur'an. Thus, it is deduced that every sin, which is a sin in its own right, if committed openly with indifference, it becomes a double sin, irrespective of the type of sin. At this point, some Imams of Tafsir (exegesis) have listed all such sins, which these wretched persons used to commit in their meetings. For instance, throwing stones on travelers and making fun of them, as Umm Hani' ؓ reports it in a hadith. Other commentators have reported that these insolent people were in the habit of committing sins openly before all others.