Surat Al Baqarah (130-131)

{ وَمَن يَرْغَبُ عَن مِّلَّةِ إِبْرَاهِيمَ إِلاَّ مَن سَفِهَ نَفْسَهُ وَلَقَدِ اصْطَفَيْنَاهُ فِي الدُّنْيَا وَإِنَّهُ فِي الآخِرَةِ لَمِنَ الصَّالِحِينَ } [البقرة:  130]

130- Those who turn away from the religion of Abraham are the fools who humiliate and belittle themselves because they prefer misguidance to the truth. Prophet Abraham is the leader of the devoted ones and whoever has disagreed with Abraham's religion has turned away from the explicit truth, the true religion, and guidance. We have chosen him for this prohethood and wisdom from among the people, and in the Hereafter people will attest for him with truthfulness and integrity.
It is a response to the infidels regarding the polytheism and idolatry which they invented in contradiction to the religion of Abraham (peace be upon him). Which error is greater than this, and which foolishness is greater than not following his religion which was based on the pure and sincere religion?

{ إِذْ قَالَ لَهُ رَبُّهُ أَسْلِمْ قَالَ أَسْلَمْتُ لِرَبِّ الْعَالَمِينَ } [البقرة:  131]

131- Allah had commanded him to submit, devote, and obey His Orders, and so he did. He obeyed and was sincere in a perfect way and submitted his affairs to Allah.