Exodus 4:17

God did not allow Moses to avoid his responsibility. However, he responded to the concern of Moses by appointing his brother Aaron to speak for him (14:16). Aaron would serve as the mouthpiece of Moses before Pharaoh and the people.

As the story continues, the text records fewer occasions when Aaron speaks on behalf of Moses. Moses increasingly speaks directly.

This suggests that the speaking difficulty of Moses may not have been as severe as he feared. It may also be that his confidence and ability grew with experience.

The fourth and final protest of Moses was that he could not speak well. He seemed desperate to avoid this difficult task.

God was becoming angry at Moses for refusing to accept the truth. The outcome did not depend on the ability of Moses. Instead, it depended on his willingness to let God's power work through him.

Moses, in his response to God, presented four reasons why he was not the one to fulfill God’s call. Although each reason supposedly relates to Moses and his ability, God’s answers show that they were really questions about God.

This section describes the mission God gave Moses to rescue the Israelites from Egyptian slavery. It is divided into two parts, 3:1–4:17 and 4:18–28.

The first part describes God's call. The second part describes the full consequences of accepting that call. Moses not only experienced a career change, but he also had to completely change his life.