Just as Aaron and the people sanctified the Levites as a substitute for the firstborn of Israel, John the Baptist (a son of Aaron) sanctified #yeshua before the people as a substitute for the whole nation of Israel. (Matthew 3:13)

The Aaronic priesthood and the Levites was necessary to sanctify the Tabernacle AND the people in the wilderness (Numbers 8 ). The Melchizedek Priesthood of Yeshua is necessary to sanctify the Tabernacle OF the people in his Kingdom (Matthew 3:15).