The answer is: Aaron

Num 26:59 - Miriam was their sister. Aaron was 3 years older than Moses (Exo 7:7).

In exploring the family dynamics of Moses, Aaron, and Miriam, it’s interesting to note how these siblings played crucial roles in the Exodus narrative. Aaron was indeed three years older than Moses and served as his right-hand man, especially during the challenging times of leading the Israelites out of Egypt. Their partnership was pivotal, especially when Moses felt overwhelmed by the task ahead. In a sense, we see a teamwork dynamic—Moses the leader and Aaron the mouthpiece (Exodus 4:16), often referred to as a "prophet" of sort.

While Aaron might best be known for his priestly offerings, it's Miriam, their sister, who often serves as an unsung heroine. She is considered one of the few female prophets mentioned in the Hebrew Bible, showing that women held significant spiritual authority in ancient times.

Fun fact: Miriam, known for her strong leadership, also led the Israelite women in song after the crossing of the Red Sea (Exodus 15:20-21). This celebration reflected an important aspect of community resilience—music and song brought them together in joy and thanksgiving amidst their trials.

Lastly, it’s intriguing to note how these siblings represent different aspects of support and leadership throughout the trials the Israelites faced. Collectively, they embody the strength derived from familial ties in times of hardship, showing us that collaboration in leadership is essential.