Shared ground
These verses show Yahweh re-issuing the mission after a setback: Moses is to go speak to Pharaoh so Israel can leave Egypt (vv. 10–11). The text presents this as Yahweh’s direct command, not Moses’ idea.
Moses’ objection is built on two points the passage states plainly: Israel has not listened to him, and Moses expects Pharaoh to be even less receptive (v. 12). Moses also describes himself with the striking phrase “uncircumcised lips,” signaling felt inadequacy in speech or fitness to speak.
Yahweh’s answer is not an argument about Moses’ self-description. Instead, Yahweh broadens and formalizes the commission: Moses and Aaron together are charged concerning both Israel and Pharaoh, with the stated aim of bringing Israel out of Egypt (v. 13).
Where interpretation differs
What “uncircumcised lips” means. Some understand it as a speech impediment or lack of eloquence (a practical speaking limitation). Others hear it as “impure/unfit lips” (ritual or moral fitness language used metaphorically), emphasizing shame, unworthiness, or outsider status rather than mechanics of speech.
Why Israel “didn’t listen.” Some read it as active refusal or distrust of Moses. Others read it mainly as inability to respond because of crushing conditions and discouragement in the immediate context (6:9), so “didn’t listen” describes a broken capacity more than stubbornness.
What the “charge” included. The text says Yahweh “gave them a charge” (v. 13) but doesn’t spell out its exact content. Some infer it included specific instructions on what to say and how to approach both audiences; others take it as a renewed authorization and responsibility statement without implying new detailed speech content.
Why the disagreement exists
The passage uses compressed narrative. It reports Moses’ phrase (“uncircumcised lips”) without explaining it, and it summarizes Yahweh’s response as a “charge” without giving the speech. Readers therefore lean on broader biblical usage of “uncircumcised” as a metaphor and on nearby context about Israel’s discouragement.
What this passage clearly contributes
It highlights the mission’s persistence: Yahweh’s purpose (Israel’s departure from Egypt) continues despite failed reception. It also clarifies roles: Moses and Aaron are commissioned toward two audiences—Israel and Pharaoh—with one goal. The text frames human weakness and resistance as real factors, but not as the deciding factor that sets the agenda for the deliverance.