“Accept these gifts from them to use in the work done for the tent of meeting. Give them to the Levites to use wherever they need these gifts for their work.”
Don’t you realize that those who work at the temple get their food from the temple? Don’t those who help at the altar get a share of what is on the altar?
They serve at a place that is a pattern, a shadow, of what is in heaven. When Moses was about to make the tent, God warned him, “Be sure to make everything based on the plan I showed you on the mountain.”