Final answer:
The priesthood of Melchizedek is considered better than the priesthood of Aaron because it is eternal, superior, and not limited by human restrictions. Jesus Christ is described as a high priest 'after the order of Melchizedek' in the Bible, highlighting the superiority of his priesthood. The Melchizedekian priesthood is associated with righteousness and faith.
Step-by-step explanation:
The priesthood of Melchizedek is considered better than the priesthood of Aaron in Christianity because it is seen as an eternal and superior priesthood. In the Bible, Melchizedek is described as a priest of the Most High God who blesses Abraham. This priesthood is seen as superior because it predates the establishment of the Levitical priesthood and is not limited by genealogy or the Mosaic Law.
In the book of Hebrews, it is explained that Jesus Christ is a high priest 'after the order of Melchizedek' and his priesthood is superior to the Aaronic priesthood. This is because Jesus, being the Son of God, has an eternal and unchanging priesthood that is not restricted by time or human limitations. He is the perfect and ultimate priest who offers a sacrifice once and for all, unlike the priests of Aaron who had to offer sacrifices repeatedly.
Furthermore, the Melchizedekian priesthood is associated with righteousness and faith, as Melchizedek is described as the king of Salem and 'priest of the Most High God.' This emphasizes the spiritual aspects of priesthood and the importance of faith in the role of a priest.