God didn't just assign tasks to Aaron; He also guaranteed his provision. This wasn't just a job; it was a divine appointment.
In Numbers 18:8, the Lord speaks directly to Aaron, establishing the system for the priests' sustenance. Notice how God frames this provision:
A Divine Gift
"Behold, I have given you charge of my heave offerings... I have given them to you as a portion." God emphasizes that these offerings were not merely collected by Aaron but were given to him by the Lord Himself. This highlights that the priestly ministry was entirely dependent on God's grace and provision.
Perpetual Inheritance
This provision wasn't a one-time payment but a "perpetual due" to Aaron and his sons. This speaks to the enduring nature of God's faithfulness to those who serve Him. It was an ordinance for all time, ensuring that the priests, set apart for God's service, would be sustained by what was consecrated to Him.