Aaron Moses’ older brother, Aaron (see Exod 6:20; 7:7), played a crucial role in founding Israel and its institutions, particularly the priesthood. He first appears after Moses’ calling at the burning bush (Exod 3:1–4:17). Moses was reluctant to accept his divine commission, claiming that he was unfit to lead the Israelites out of Egypt because his words tended to “get tangled” (Exod 4:10). Despite God’s assurances, Moses continued to object until God appointed Aaron to be Moses’ mouthpiece. Thereafter, Aaron was often at Moses’ side, speaking to the Israelite leaders and demanding that Pharaoh let the Israelites leave Egypt (Exod 5:1-5). During the Israelites’ wilderness wanderings, God appointed Aaron and his sons to be set apart and dedicated as priests (Exod 28:1-5; 29:1-46; Lev 8:1-36). Thus, Aaron became Israel’s first high priest. Aaron’s role as high priest was especially prominent on the annual Day of Atonement, the only day when the high priest entered the Most Holy Place to purify it from the effects of Israel’s sins (Lev 16). Before the high priest could do so, however, he had to offer a sacrifice to atone for his own sins. Aaron was an imperfect leader. While...

Moses Moses was the founding leader of Israel as a nation. God used Moses at a critical juncture in the history of his people. He was the prophet who received the law and mediated God’s covenant with Israel at Mount Sinai (Exod 19:3-6). He was also the first known writer of Scripture. The younger brother of Miriam and Aaron, Moses was born in Egypt under dangerous circumstances (Exod 1:15–2:2). The Egyptian pharaoh, fearing a rebellion, had decreed that all Hebrew boys be killed at birth. Moses’ mother, Jochebed, entrusted her infant son to God and set him afloat in the Nile in a reed basket. Pharaoh’s daughter found him and took him into the palace to raise as her own child (Exod 2:3-10). Little is known about Moses’ upbringing. Jewish tradition holds that he received both administrative and military training in Pharaoh’s household. When he was about forty years old, he killed an Egyptian to rescue a Hebrew slave, and then he fled to Midian (2:11-15; cp. Acts 7:23-29). There he rescued some young women who were being harassed as they watered their flocks. Their father (Jethro) invited him home. Moses married one of the women, Zipporah, and began a family as he cared for h...