If the old law ended at Christ's death, how could it be fading away long after Christ's death?
2 Corinthians 3:7 Now if the ministry of death, carved in letters on stone, came with such glory that the Israelites could not gaze at Moses’ face because of its glory, which is fading away.
2 Corinthians 3:7 in the KJV says,
"But if the ministration of death, written
and engraven in stones, was glorious, so that the children of Israel could not stedfastly behold the face of Moses for the glory of his countenance;
which glory was to be done away."
It does not say fading away. It says glory was to be done away (past tense).
You said:
2 Corinthians 3:11 For if what is fading away came with glory, much more will what is permanent have glory.
The KJV says,
"For if that which is done away
was glorious, much more that which remaineth
is glorious." (2 Corinthians 3:11).
It says, that which is done away (past tense) and not that which is fading away.
You said:
Hebrews 8:13 In speaking of a new covenant, he makes the first one obsolete. And what is becoming obsolete and growing old is ready to vanish away.
"In that he saith,
"A new covenant," he hath made the first old. Now that which decayeth and waxeth old
is ready to vanish away." (Hebrews 8:13).
The author of Hebrews is interpreting the meaning of Jesus's words
"A New Covenant" when He spoke them at the Lord's supper!
For Jesus said at the Lord's supper (Before His crucifixion to his disciples):
"For this is my blood of the new testament, which is shed for many for the remission of sins." (Matthew 26:28).
So the author of Hebrews in Hebrews 8:13 is describing the meaning of what Jesus meant by the words
"the New Testament" (i.e.
"A New Covenant") at the timing of the Lord's supper. For at the time of the Lord's supper, when Jesus said the words
"The New Testament" the author of Hebrews was telling us the meaning of what Jesus meant in that moment, which is: "
That which decayeth and waxeth old is ready to vanish away." Jesus is speaking of the Old Covenant vanishing away at the Lord's supper by saying the words:
"A New Covenant" (or
"The New Testament"). How so? Well, because when Jesus died upon the cross, the temple veil was torn from top to bottom letting us know that the laws on the animal sacrifices and the priesthood had ended.
You said:
If the old law ended at Christ's death, how could there be those under the old covenant persecuting those under the new covenant long after Christ's death?
Galatians 4:24-25,29
24Now this may be interpreted allegorically: these women are two covenants. One is from Mount Sinai, bearing children for slavery; she is Hagar.
25Now Hagar is Mount Sinai in Arabia;
e she corresponds to the present Jerusalem, for she is in slavery with her children. just as at that time he who was born according to the flesh persecuted him who was born according to the Spirit, so also it is now
I don't see how your question makes any sense or how this passage proves your position. This passage is saying that the son of Hagar is from Mt. Sinai who is in bondage and the children of the promise if of Jerusalem from above who is free.
1. Jerusalem (Isaac - Child of the Free) (Who is above).
2. Mt. Sinai (Ishmael - Child of Bondage) (Who is from below).
Ishmael persecuted Isaac (Who was of the Spirit).
So this proves that the Jews (Who were stuck under trying to be justified by following the Old Law alone without God's grace) were persecuting Christians who were free. They were also trying to convince Christians to be circumcised; However, Paul says if any man seeks to be circumcised, Christ will profit them nothing (Galatians 5:2). So this passage does not prove that the Old Covenant was still in effect.
You said:
If the old law ended at Christ's death, why did Paul have to die to it after Christ's death?
Romans 7: 4-6 Likewise, my brothers, you also have died to the law through the body of Christ, so that you may belong to another, to him who has been raised from the dead, in order that we may bear fruit for God.
5For while we were living in the flesh, our sinful passions, aroused by the law, were at work in our members to bear fruit for death.
6But now we are released from the law, having died to that which held us captive, so that we serve in the new way of the Spirit and not in the old way of the written code.
First, Paul is talking about how we are dead to sin in Christ through baptism. If you were to skip back to the previous chapter it talks about this.
For Romans 6:1-3 says,
1 "What shall we say then? Shall we continue in sin, that grace may abound?
2 God forbid. How shall we, that are dead to sin, live any longer therein?
3 Know ye not, that so many of us as were baptized into Jesus Christ were baptized into his death?"
Second, Paul says we have died to the Law by the body of Christ in Romans 7:4 (of which you quoted). Romans 7:6 says we have been delivered from the Law. So we are not under the Law according to these verses.
Three, Romans 7:6 also says,
"serve in newness of spirit, and not
in the oldness of the letter."
This means we are not to serve according to the oldness of the letter (Meaning the Old Covenant Law of Moses) and we are to serve in newness of spirit (i.e. the New Covenant teachings of Jesus Christ and His followers).