'Law of Moses' in the Bible

For if the message spoken through angels proved to be binding [Note: This is a reference to the law of Moses. See Acts 7:53; Gal. 3:19], and every violation [of it] and disobedience [to it] received a just penalty,

For indeed, the descendants of Levi, who are appointed to the priesthood, are commanded by the law of Moses to collect a tenth [of the income] of the Israelites, who are their brothers, even though these brothers are [also] descendants of Abraham.

So, if perfection [i.e., a right relationship with God] could have been attained through the Levitical priesthood, (for under it people had received the law of Moses), what further need would there have been for another priest to arise, according to the order of Melchizedek, who was not considered "according to the order of Aaron"?

For on one hand, the previous command [i.e., the law of Moses] was set aside because it was weak and useless,

For the law of Moses appoints [morally] weak men to be head priests, but the message of [God's] oath, which came after that law [Note: The quotation from Psa. 110:4 (See verse 21) was written after the law of Moses was given] appointed the Son, who was made perfect [in every way] forever.

Now if He were [still] on earth, He would not be a priest [at all], since there are [already] those [on earth] who offer gifts according to the law of Moses.

And, according to the law of Moses, almost everything is [ceremonially] cleansed by blood, for there is no forgiveness [of sins] apart from the shedding of blood.

For the law of Moses was [only] a foreshadow of the good things that [were] to come [i.e., in the Messianic age], not the exact image of those things. It can never, by the same sacrifices, continually offered year after year, make [morally] perfect those who draw near [to God in worship].

[After] saying the above, "You did not want, nor were you pleased, with [peace] sacrifices and [meal] offerings and whole burnt offerings and sin offerings," [although] these are offered according to the law of Moses,

The person who has disregarded the law of Moses is put to death without being shown mercy on the testimony of two or three witnesses.