And Moses said, O my Lord. The phrase used by Moses is full of force. It is "vox dolentis et supplicantis" (Noldius). Joseph's brethren use it to the steward of Joseph's house, when they expect to be fallen upon and taken for bondsmen (Genesis 43:20); Judah used it (Genesis 44:18) when pleading with Joseph for Benjamin; Aaron when pleading for Miriam (Numbers 13:11); Joshua when expostulating with God about Ai (Joshua 7:8).
There is a deprecatory idea in it, as well as a supplicatory one; an idea like that which Abraham expanded into the words, "Oh! let not the Lord be angry, and I will speak yet but this once" (Genesis 18:32).
Moses feels that he is trying the patience of God to the uttermost; but yet he must make one more effort to escape his mission. I am not eloquent. Literally, as in the margin, "a man of words." "Words do not come readily to my tongue when I attempt to speak; I have never been a fluent speaker, neither yesterday (i.
e. recently) nor the day before (i.e. formerly). Nor do I even find that I have become eloquent by divine inspiration since thou spakest with me. Still I remain slow of speech and slow of tongue." A question is raised whether the mere difficulty of finding words and giving them utterance—a difficulty felt at first by almost every speaker—is here meant, or something further, as "a natural impediment owing to defect in the organs of speech" (Kalisch), or a want of readiness, owing to disuse, in speaking the Hebrew language (Clarke).
The latter suggestion is scarcely consistent with the ease and fluency with which Moses had carried on the conversation in Hebrew up to this point. The former is a possible meaning, though not a necessary one.
According to a Jewish tradition, Moses had a difficulty in pronouncing the labials b, v, m, ph, p.