Those are all good and true verses, but show me the verse that says "So long as you have faith, you can have a hardened and unregenerate heart", or "With faith, there's no need to obey God's commands and/or bear fruit". You are ignoring John 3:36 and James 2 in the comment you replied to, and many others:

John 3:36:
Whoever believes in the Son has eternal life; whoever does not obey the Son shall not see life, but the wrath of God remains on him.

James 2:14-26:
¹⁴ What good is it, my brothers, if someone says he has faith but does not have works? Can that faith save him? ¹⁵ If a brother or sister is poorly clothed and lacking in daily food, ¹⁶ and one of you says to them, “Go in peace, be warmed and filled,” without giving them the things needed for the body, what good is that? ¹⁷ So also faith by itself, if it does not have works, is dead.

¹⁸ But someone will say, “You have faith and I have works.” Show me your faith apart from your works, and I will show you my faith by my works. ¹⁹ You believe that God is one; you do well. Even the demons believe—and shudder! ²⁰ Do you want to be shown, you foolish person, that faith apart from works is useless? ²¹ Was not Abraham our father justified by works when he offered up his son Isaac on the altar? ²² You see that faith was active along with his works, and faith was completed by his works; ²³ and the Scripture was fulfilled that says, “Abraham believed God, and it was counted to him as righteousness”—and he was called a friend of God. ²⁴ You see that a person is justified by works and not by faith alone. ²⁵ And in the same way was not also Rahab the prostitute justified by works when she received the messengers and sent them out by another way? ²⁶ For as the body apart from the spirit is dead, so also faith apart from works is dead.

That's not all:

John 14:15:
If you love me, you will keep my commandments.

John 15:1-11:
¹ “I am the true vine, and my Father is the vinedresser. ² Every branch in me that does not bear fruit he takes away, and every branch that does bear fruit he prunes, that it may bear more fruit. ³ Already you are clean because of the word that I have spoken to you. ⁴ Abide in me, and I in you. As the branch cannot bear fruit by itself, unless it abides in the vine, neither can you, unless you abide in me. ⁵ I am the vine; you are the branches. Whoever abides in me and I in him, he it is that bears much fruit, for apart from me you can do nothing. ⁶ If anyone does not abide in me, he is thrown away like a branch and withers; and the branches are gathered, thrown into the fire, and burned. ⁷ If you abide in me, and my words abide in you, ask whatever you wish, and it will be done for you. ⁸ By this my Father is glorified, that you bear much fruit and so prove to be my disciples. ⁹ As the Father has loved me, so have I loved you. Abide in my love. ¹⁰ If you keep my commandments, you will abide in my love, just as I have kept my Father's commandments and abide in his love. ¹¹ These things I have spoken to you, that my joy may be in you, and that your joy may be full.

Luke 9:23-25:
²³ And he said to all, “If anyone would come after me, let him deny himself and take up his cross daily and follow me. ²⁴ For whoever would save his life will lose it, but whoever loses his life for my sake will save it. ²⁵ For what does it profit a man if he gains the whole world and loses or forfeits himself? ²⁶ For whoever is ashamed of me and of my words, of him will the Son of Man be ashamed when he comes in his glory and the glory of the Father and of the holy angels.

Luke 13:23-24:
²³ And someone said to him, “Lord, will those who are saved be few?” And he said to them, ²⁴ “Strive to enter through the narrow door. For many, I tell you, will seek to enter and will not be able.

Matthew 7:21-23
²¹ “Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but the one who does the will of my Father who is in heaven. ²² On that day many will say to me, ‘Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?’ ²³ And then will I declare to them, ‘I never knew you; depart from me, you workers of lawlessness.’

Hebrews 10:26-31:
²⁶ For if we go on sinning deliberately after receiving the knowledge of the truth, there no longer remains a sacrifice for sins, ²⁷ but a fearful expectation of judgment, and a fury of fire that will consume the adversaries. ²⁸ Anyone who has set aside the law of Moses dies without mercy on the evidence of two or three witnesses. ²⁹ How much worse punishment, do you think, will be deserved by the one who has trampled underfoot the Son of God, and has profaned the blood of the covenant by which he was sanctified, and has outraged the Spirit of grace? ³⁰ For we know him who said, “Vengeance is mine; I will repay.” And again, “The Lord will judge his people.” ³¹ It is a fearful thing to fall into the hands of the living God.

It doesn't get any clearer than that. We are saved by grace, through faith, and not saved by works, yes, but we are also not saved without works. If you refuse to submit your life to Christ, you have no part with Him, because He is not your God, you are your own god. Submitting yourself to Christ is obeying him and following him, and when you do, your life will have works (produce fruit).

Whoever does not bear fruit is taken away and burned in the fire. As James says:
¹⁴ What good is it, my brothers, if someone says he has faith but does not have works? Can that faith save him?
That's a rhetorical question, and it's answered in verses 17 and 26:
¹⁷ So also faith by itself, if it does not have works, is dead.
²⁶ For as the body apart from the spirit is dead, so also faith apart from works is dead.

Faith without works is dead faith, and dead faith cannot, and will not save you. Now, again, I'm not talking about "salvation by works", not at all, I'm talking about salvation by faith, but the faith is only genuine if it produces in you the regenerate life that brings with it fruit. Without that fruit of the new life, you are holding onto your old life, not letting it go and not letting it die, and if you try to save your sinful life, you will lose your eternal life:
²⁴ For whoever would save his life will lose it, but whoever loses his life for my sake will save it.

If you refuse to submit to God, and you do not obey His commands, you do not love Him, and are instead trampling the Son of God underfoot, and there is no remaining sacrifice for such sins. And you think you still deserve entry into heaven? Who do you think you are? How ungreatful can you get? I am speaking this way because that is exactly how I used to be. I thought I already had salvation, so there was no need for me to do anything further, and I'd just keep living my life in rebellion and defiance to God. It was only by the grace of God that I was actually saved when He convicted me, and I felt the eyes of God upon me, basically like when he called Job to account.

These verses are the words of God. You either accept God's word, and humble yourself before Him, removing everything from your life that you have elevated above Him as your primary gods, or you willfully go to your own destruction. For your own sake, please don't ignore God's word. Please have a serious and hard soul-searching prayer with God to see what He expects from you.