Musa's unique spiritual rank

قَالَ يَـٰمُوسَىٰٓ إِنِّى ٱصْطَفَيْتُكَ عَلَى ٱلنَّاسِ بِرِسَـٰلَـٰتِى وَبِكَلَـٰمِى فَخُذْ مَآ ءَاتَيْتُكَ وَكُن مِّنَ ٱلشَّـٰكِرِينَ

[Allāh] said, "O Moses, I have chosen you over the people with My messages and My words [to you]. So take what I have given you and be among the grateful."