Poppycock - nonsense - there is no such commandment for men to cut their hair short and for women to grow their hair long.
These are cultural and social issues of preference that Paul is expressing but their is no scripture that declares that hairstyles are a salvation issue.
And in the OT the Levitical priesthood and other men would grow their hair and beards - the Nazarites were not even allowed to bring a razor to their head or beard.
Leviticus 21:1 And the LORD said to Moses, “Speak to the priests, the sons of Aaron, and say to them ...
5 They shall not make bald patches on their heads, nor shave off the edges of their beards, nor make any cuts on their body.
Leviticus 19:1 And the LORD spoke to Moses, saying,
2 “Speak to all the congregation of the people of Israel and say to them, You shall be holy, for I the LORD your God am holy.
27 You shall not round off the hair on your temples or mar the edges of your beard.
Numbers 6:2 “Speak to the people of Israel and say to them, When either a man or a woman makes a special vow, the vow of a Nazirite, to separate himself to the LORD,
5 “All the days of his vow of separation, no razor shall touch his head. Until the time is completed for which he separates himself to the LORD, he shall be holy. He shall let the locks of hair of his head grow long.
Die To The Old Testament Law---And Be Under The New Testament Law Of Christ
[Jhn 10:1, 8-9
1 "Most assuredly, I say to you, he who does not enter the sheepfold by the door, but climbs up some other way, the same is a thief and a robber. ...
8 "All who [ever] came before Me are thieves and robbers, but the sheep did not hear them.
9 "I am the door. If anyone enters by Me, he will be saved, and will go in and out and find pasture.
[Gal 2:19, 21
19 "For I through the law died to the law that I might live to God. ...
21 "I do not set aside the grace of God; for if righteousness [comes] through the law, then Christ died in vain."
Acts 15:10
10 "Now therefore, why do you test God by putting a yoke on the neck of the disciples which neither our fathers nor we were able to bear?
Acts 15:24-29
24 Since we have heard that some who went out from us have troubled you with words, unsettling your souls, saying, 'You must be circumcised and keep the law'-- to whom we gave no such commandment--
25 it seemed good to us, being assembled with one accord, to send chosen men to you with our beloved Barnabas and Paul,
26 men who have risked their lives for the name of our Lord Jesus Christ.
27 We have therefore sent Judas and Silas, who will also report the same things by word of mouth.
28 For it seemed good to the Holy Spirit, and to us, to lay upon you no greater burden than these necessary things:
29 that you abstain from things offered to idols, from blood, from things strangled, and from sexual immorality. If you keep yourselves from these, you will do well. Farewell.
[Rom 7:6
6 But now we have been delivered from the law, having died to what we were held by, so that we should serve in the newness of the Spirit and not [in] the oldness of the letter.
[Gal 2:19-21
19 "For I through the law died to the law that I might live to God.
20 "I have been crucified with Christ; it is no longer I who live, but Christ lives in me; and the [life] which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself for me.
21 "I do not set aside the grace of God; for if righteousness [comes] through the law, then Christ died in vain."
[Heb 7:12, 18
12 For the priesthood being changed, of necessity there is also a change of the law. ...
18 For on the one hand there is an annulling of the former commandment because of its weakness and unprofitableness,
[Gal 5:1-4
1 Stand fast therefore in the liberty by which Christ has made us free, and do not be entangled again with a yoke of bondage.
2 Indeed I, Paul, say to you that if you become circumcised, Christ will profit you nothing.
3 And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law.
4 You have become estranged from Christ, you who [attempt to] be justified by law; you have fallen from grace.
[Heb 8:13
13 In that He says, "A new [covenant]," He has made the first obsolete. Now what is becoming obsolete and growing old is ready to vanish away.
[Heb 9:13-18
13 For if the blood of bulls and goats and the ashes of a heifer, sprinkling the unclean, sanctifies for the purifying of the flesh,
14 how much more shall the blood of Christ, who through the eternal Spirit offered Himself without spot to God, cleanse your conscience from dead works to serve the living God?
15 And for this reason He is the Mediator of the new covenant, by means of death, for the redemption of the transgressions under the first covenant, that those who are called may receive the promise of the eternal inheritance.
16 For where there [is] a testament, there must also of necessity be the death of the testator.
17 For a testament [is] in force after men are dead, since it has no power at all while the testator lives.
18 Therefore not even the first [covenant] was dedicated without blood.
[Gal 3:11-14
11 But that no one is justified by the law in the sight of God [is] evident, for "the just shall live by faith."
12 Yet the law is not of faith, but "the man who does them shall live by them."
13 Christ has redeemed us from the curse of the law, having become a curse for us (for it is written, "Cursed [is] everyone who hangs on a tree"),
14 that the blessing of Abraham might come upon the Gentiles in Christ Jesus, that we might receive the promise of the Spirit through faith.
[Rom 13:10
10 Love does no harm to a neighbor; therefore love [is] the fulfillment of the law.
[Rom 13:8
8 Owe no one anything except to love one another, for he who loves another has fulfilled the law.
[1Co 4:6
6 Now these things, brethren, I have figuratively transferred to myself and Apollos for your sakes, that you may learn in us not to think beyond what is written, that none of you may be puffed up on behalf of one against the other.
[Rev 22:18-19
18 For I testify to everyone who hears the words of the prophecy of this book: If anyone adds to these things, God will add to him the plagues that are written in this book;
19 and if anyone takes away from the words of the book of this prophecy, God shall take away his part from the Book of Life, from the holy city, and [from] the things which are written in this book.
XXX To die to the old testament law is required to be born again. The law is not of faith. There are many antichrists out there still pushing the old testament law. They are antichrists.
See also Jesus Changed The Law, Jesus Commandments,Law Old testament law, born again to the Spirit
crucify emotions
Ro 7-6
But now we have been delivered from the law, having died to what we were held by, so that we should serve in the newness of the Spirit and not [in] the oldness of the letter.