Where does the Scripture states that our choices are not free?
For this response, I prefer to focus on your question here. You said that you understand your argument rests on the one Scripture, so you should have no problem accepting the correction of Scripture, concerning the notion of "free" choices, free being the key word. Without further ado here is a sample of verses for help and meditation.
Job 14:4 - Who
can bring a clean thing out of an unclean? No one!
Job 15:14-16 - What is man, that he
could be pure? And he who is born of a woman, that he
could be righteous?
Jeremiah 13:23 -
Can the Ethiopian change his skin or the leopard its spots? Then may you also
do good who are accustomed to
do evil.
Matthew 7:17 - Even so, every good tree bears good fruit, but a bad tree bears bad fruit. A good tree
cannot bear bad fruit, nor
can a bad tree bear good fruit.
John 8:34 - Jesus answered them, "Most assuredly, I say to you, whoever commits sin is a
slave of sin."
John 14:16-18 - And I will pray the Father, and He will give you another Helper, that He may abide with you forever, even the Spirit of truth, whom the world
cannot receive because it neither sees Him nor knows Him
Romans 6:6 - knowing this, that our old man was crucified with Him, that the body of sin might be done away with, that we should no longer be
slaves of sin.
Romans 8:5-8 - For those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit, the things of the Spirit. For to be carnally minded is death, but to be spiritually minded is life and peace. Because the
carnal mind is enmity against God; for
it is not subject to the law of God,
nor indeed can be. So then, those who are in the flesh
cannot please God.
1 Corinthians 2:14 - But
the natural man does not receive the things of the Spirit of God, for they are foolishness to him;
nor can he know them, because they are spiritually discerned.
Galatians 5:17 - For the flesh lusts against the Spirit, and the Spirit against the flesh; and these are contrary to one another, so that
you do not do the things that you wish.
Ephesians 2:1 - And
you were dead in trespasses and sins, in which you once walked according to the course of this world, according to the prince of the power of the air, the spirit who now works in the sons of disobedience, among whom also we all once conducted ourselves in the lusts of our flesh, fulfilling the desires of the flesh and of the mind, and were
by nature children of wrath, just as the others.
"And
the LORD your God will circumcise your heart and the heart of your offspring, so that you will love the LORD your God with all your heart and with all your soul, that you may live." -
Deuteronomy 30:6
“Therefore say, ‘
Thus says the Lord GOD: “
I will gather you from the peoples, assemble you from the countries where you have been scattered, and
I will give you the land of Israel.” ’ “And they will go there, and they will take away all its detestable things and all its abominations from there. “Then
I will give them one heart, and
I will put a new spirit within them,
and take the stony heart out of their flesh,
and give them a heart of flesh, “that they may walk in My statutes and keep My judgments and do them; and they shall be My people, and I will be their God. -
Ezekiel 11:17-20
“For
I will take you from among the nations, gather you out of all countries, and bring you into your own land. “Then
I will sprinkle clean water on you, and you shall be clean;
I will cleanse you from all your filthiness and from all your idols. “
I will give you a new heart and put a new spirit within you;
I will take the heart of stone out of your flesh
and give you a heart of flesh
. “
I will put My Spirit within you and cause you to walk in My statutes, and you will keep My judgments and do
them.. -
Ezekiel 36:24-28
"And
I will put my Spirit within you, and you shall live...Then you shall know that I am the LORD; I have spoken, and I will do it, declares the LORD." -
Ezekiel 37:14
"The hearing ear and the seeing eye,
the LORD has made them both." -
Proverbs 20:12 [also see
Matthew 5:8,
Matthew 13:13-23,
Mark 4:12,
Luke 8:10,
Luke 10:24,
John 5:37,
John 12:40]
But as many as received Him, to them He gave the right to become children of God, to those who believe in His name:
who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God. -
John 1:12-13
"For as the Father raiseth up the dead, and quickeneth them; even so
the Son quickeneth whom He will" - John 5:21
It is
the Spirit who gives life; the flesh is of no avail. The words that I have spoken to you are spirit and life. But there are some of you who do not believe." For Jesus knew from the beginning who those were who did not believe, and who it was who would betray him. And he said, "This is why I told you that
no one can come to me unless it is granted him by the Father." -
John 6:63-65
Psalm 115:3. “But our God is in heaven; He does whatever He pleases.”
Psalm 135:6. “Whatever the LORD pleases He does, in heaven and in earth, in the seas and in all deep places.”
Isaiah 46:10-11. “My counsel shall stand, and I will do all My pleasure.... Indeed I have spoken it; I will also bring it to pass. I have purposed it; I will also do it.”
Job 42:2. “You can do everything, and that no purpose of Yours can be withheld from You.”
Daniel 4:35. “He does according to His will in the army of heaven and among the inhabitants of the earth. No one can restrain His hand.”
Proverbs 16:1. “The preparations of the heart belong to man, but the answer of the tongue is from the LORD.”
Proverbs 16:9. “A man’s heart plans his way, but the LORD directs his steps.”
Proverbs 19:21. “There are many plans in a man’s heart; nevertheless, the LORD’S counsel. that will stand.”
Revelation 17:17. “For God has put it into their hearts to fulfill His purpose, to be of one mind, and to give their kingdom to the beast, until the words of God are fulfilled.”
2 Thessalonians 2:11-12. “For this reason God will send them [those who perish] strong delusion, that they should believe the lie, that they all may be condemned.”
Romans 9:18-21. “He has mercy on whom He wills, and whom He wills He hardens. You will say to me then, ‘Why does He still find fault? For who has resisted His will?’ But indeed, O man, who are you to reply against God? Will the thing formed say to him who formed it, ‘Why have you made me like this?’ Does not the potter have power over the clay, from the same lump to make one vessel for honor and another for dishonor?”
Deuteronomy 2:30. “But Sihon king of Heshbon would not let us pass through, for the LORD your God hardened his spirit and made his heart obstinate, that He might deliver him into your hand, as it is this day.”
Joshua 11:19-20. “There was not a city that made peace with the children of Israel, except the Hivites, the inhabitants of Gibeon. All the others they took in battle. For it was of the LORD to harden their hearts, that they should come against Israel in battle, that He might utterly destroy them, and that they might receive no mercy, but that He might destroy them, as the LORD had commanded Moses.”
Exodus 10:1, 20. “Now the LORD said to Moses, ‘Go in to Pharaoh; for I have hardened his heart and the hearts of his servants, that I may show these signs of Mine before them….’ But the LORD hardened Pharaoh’s heart, and he did not let the children of Israel go” (cf. Ex. 4:21; 7:3; 9:12; 14:4; 20:27).
John 12:39-40. “Therefore they could not believe, because Isaiah said again: He has blinded their eyes and hardened their heart, lest they should see with their eyes and understand with their heart, lest they should turn, so that I should heal them” (cf. Mk. 4:11-12).
Luke 24:4. “And He opened their understanding, that they might comprehend the Scriptures.”
Acts 16:14. “Now a certain woman named Lydia heard us. She was a seller of purple from the city of Thyatira, who worshipped God. The Lord opened her heart to heed the things spoken by Paul.”
Philippians 2:13. “For it is God who works in you both to will and to do for His good pleasure.”
So yeah, not so free choices, rather a limited freedom bound to the nature of the will, conditioned by experiences, and limited in many other ways by external environment, geological location, place in time, etc. etc. In the simplest of terms, man is either a slave to Christ or a slave to satan, and salvation belongs to God, He chooses first, He alone does what we cannot in the miraculous work of regeneration.