# on behalf of

"for." This means to do something for someone else, as a representative for them.

# help the tribes of Israel

Here the "tribes of Israel" refer to the people of Israel. AT: "help the people of Israel" (See: [[rc://en/ta/man/translate/figs-metonymy]])

# they must help the tribes of Israel to carry out the tabernacle service

The phrase "carry out" means to "serve." AT: "they must help the tribes of Israel by serving in the tabernacle" (See: [[rc://en/ta/man/translate/figs-idiom]])

# tabernacle service

"work of the tabernacle"