Tafsir of Ash-Shu`ara' 26:14

And when your Lord called Musa: "Go to the people who are wrongdoers. The people of Fir`awn. Will they not have Taqwa!'' He said: "My Lord! Verily, I fear that they will deny me, And my breast straitens, and my tongue expresses not well. So send for Harun. And they have a charge of crime against me, and I fear they will kill me.'' So, Musa asked Allah to remove these difficulties for him, as he said in Surah Ta Ha:

قال رب اشرح لى صدرى

ويسر لى أمرى

Musa said: "O my Lord! Open for me my chest. And ease my task for me.'' (20:25-26) until:

قد أوتيت سولك يموسى

You are granted your request, O Musa! (20:36)

ولهم علي ذنب فٲخاف أن يقتلون

And they have a charge of crime against me, and I fear they will kill me. because he had killed that Egyptian, which was the reason that he left the land of Egypt