Older people were respected in that culture. The leaders were usually older people and were called "elders." The youngest person would be the least likely to lead, and the least important. Alternate translation: "the least important" (See: [[rc://en/ta/man/jit/figs-metaphor]])
Words from the phrase before this apply to this phrase. Alternate translation: "and let the one who leads become like the one who serves" (See: [[rc://en/ta/man/jit/figs-ellipsis]])