Moses was granted special insight into God’s name. Moses knew the meaning of God’s name, and that strengthened his faith
كَمَا أَنَّ تَقْدِيرَهُمْ لِٱسْمِهِ نَمَا فِيمَا بَارَكَهُمْ وَٱعْتَنَى بِهِمْ وَأَطْلَعَهُمْ عَلَى أَوْجُهٍ مِنْ قَصْدِهِ .‏