﴿ وَيَضِيقُ صَدْرِى وَلَا يَنطَلِقُ لِسَانِى فَأَرْسِلْ إِلَىٰ هَٰرُونَ ﴾

“and then my breast will be straitened and my tongue will not be free: send, then, [this Thy command] to Aaron.”

(And I shall be embarrassed) because of their denial; it is also said that this means: and my heart will shrink from delivering the message, (and my tongue will not speak plainly) out of awe of him, (therefore send for Aaron (to help me)) send Aaron with me to support me; it is also said that this means: send Gabriel to Aaron so that he helps me.