﴿ وَأَلْقِ عَصَاكَ ۚ فَلَمَّا رَءَاهَا تَهْتَزُّ كَأَنَّهَا جَآنٌّۭ وَلَّىٰ مُدْبِرًۭا وَلَمْ يُعَقِّبْ ۚ يَٰمُوسَىٰ لَا تَخَفْ إِنِّى لَا يَخَافُ لَدَىَّ ٱلْمُرْسَلُونَ ﴾

“[And then He said:] “Now throw down thy staff!” But when he saw it move rapidly, as if it were a serpent, he drew back [in terror], and did not [dare to] return. [And God spoke to him again:] O Moses! Fear not - for, behold, no fear need the message-bearers have in My Presence,”

Please check ayah 27:14 for complete tafsir.