Jesus started his ministry at age 30 and died at age 33....Jesus fulfilled the law perfectly.
Numbers 4 tells us in several places that a Priest working in the Tent of the meeting/Tabernacle started at age 30...
Number 4.3:
[SUP]3 [/SUP]from thirty years and upward, even to fifty years old, all who enter the service to do the work in the tent of meeting.
Numbers 4.23:
[SUP]23 [/SUP]from thirty years and upward to fifty years old, you shall number them; all who enter to perform the service to do the work in the tent of meeting.
Numbers 4.30
[SUP]30 [/SUP]from thirty years and upward even to fifty years old, you shall number them, everyone who enters the service to do the work of the tent of meeting.
Had Jesus began his ministry before age 25, he would have violated the Law in Numbers 8. Had he started at age 29, he would have violated the law in Numbers 4..
Anyone could serve in the tent of meeting from ages 25-50, however you could not be a Priest until age 30....now think about this for a bit and you will understand it...