He selected him, as Allah says :

وَلَقَدْ ءَاتَيْنَآ إِبْرَهِيمَ رُشْدَهُ مِن قَبْلُ وَكُنَّا بِهِ عَـلِمِينَ

(And before, We indeed gave Ibrahim his integrity, and We were indeed most knowledgeable about him)(21:51). Then Allah says:

Sequence of Verses

Refuted in the previous verses was the root of Shirk and Kufr which is rejection of the reality of Allah's Oneness and the rejection of the mandate given by Him to His prophet. Also refuted there were some off-shoots of Kufr and Shirk in the form of legalizing the illegal and illegalizing the legal, a virtual reversal of Divinely ordained arrangements. Since the Mushriks of Makkah who were the first direct addressees of the Holy Qur’ an and who, despite their infidelity and idol-worship, claimed that they were adherents of the great community of Sayyidna Ibrahim (علیہ السلام) and that what they did was all in accordance with his teachings, it was also taken up as due. The rejection of their position came on the basis of what they already believed in.