The common teaching in Christianity as far as I know is that God's Law that was given to Moses in the Old Testament was fulfilled by Jesus and therefore doesn't apply to us Christians today. Some make a 3-part distinction in the Law and say that the civil and ceremonial laws don't apply anymore but the moral laws do apply.
However, I find the two following verses confusing. They are in the context of ceremonial law and state that the regulations shall be perpetual and forever, respectively.
Exodus 27:21 "In the tent of meeting, outside the veil which is before the testimony, Aaron and his sons shall keep it in order from evening to morning before the LORD; it shall be a perpetual statute throughout their generations for the sons of Israel. (NASB)
Exodus 28:43 "They shall be on Aaron and on his sons when they enter the tent of meeting, or when they approach the altar to minister in the holy place, so that they do not incur guilt and die. It shall be a statute forever to him and to his descendants after him. (NASB)
Why would it say "perpetual" and "forever" if the Mosaic Law was meant to be temporary and to be fulfilled by Christ? Shouldn't it have said something like: "You shall obey these statutes until I send Messiah who will fulfill them"?
How do we reconcile these passages with the belief that Jesus fulfilled the Mosaic Law and it's not binding on us anymore?
However, I find the two following verses confusing. They are in the context of ceremonial law and state that the regulations shall be perpetual and forever, respectively.
Exodus 27:21 "In the tent of meeting, outside the veil which is before the testimony, Aaron and his sons shall keep it in order from evening to morning before the LORD; it shall be a perpetual statute throughout their generations for the sons of Israel. (NASB)
Exodus 28:43 "They shall be on Aaron and on his sons when they enter the tent of meeting, or when they approach the altar to minister in the holy place, so that they do not incur guilt and die. It shall be a statute forever to him and to his descendants after him. (NASB)
Why would it say "perpetual" and "forever" if the Mosaic Law was meant to be temporary and to be fulfilled by Christ? Shouldn't it have said something like: "You shall obey these statutes until I send Messiah who will fulfill them"?
How do we reconcile these passages with the belief that Jesus fulfilled the Mosaic Law and it's not binding on us anymore?

But then this seems to clearly contradict Paul's letters. 
