Freewill means self determined. When applied to the moral/immoral purview the term becomes an equivocation between two opposing higher powers of good and evil. But it is not self determined even because these are higher powers. I suggest that you consider that there are children of God and children of the devil. The child of the devil would beat the beggar and take his dollars, the child of God would give the beggar some money.
The freewiller is saying that I choose who my Father will be as my prerogative, equivocating back and forth between two masters. This type of a freewill is a form of vanity called double mindedness, that supposes that a person can change his moral/immoral characteristics by his own ability to choose back and forth in an equivocation. It is contrary to scripture. John warns us not to be deceived by anyone teaching otherwise.
1 John 3:7-10King James Version (KJV)
7 Little children, let no man deceive you: he that doeth righteousness is righteous, even as he is righteous.
8 He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.
9 Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God.
10 In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother.
The understanding is not in four verses, but the Lord gives understanding not our reasoning.
Proverb 2:6 For the Lord gives wisdom, from His mouth come knowledge and understanding.
Rom 3: 10 THERE IS NON RIGHTEOUS, NOT EVEN ONE; THERE IS NONE WHO UNDERSTANDS, THERE IS NONE WHO SEEKS FOR GOD.
Rom 7:19 For the good that I want, I do not do, but I practice the very evil that I do not want.
1 Jn 1:8 Is we say we have no sin, we are deceiving ourselves and the truth in not in us.
1 Jn 1:10 If we say that we have not sinned, we make Him a liar and His word is not in us.
Now as far as predestination and freewill go, God has predetermined, and He has also given us freewill. None of us used that freewill to seek Him, but He said to seek Him, and made it possible for some to seek Him, despite all being rebellious. All have chosen a sinful way with their freewill, but some our saved by God. All were of the devil and had to be born again or born of God. And that did not mean they no longer had a problem and battle with sin, so as to be doing every thing right. It meant they became aware of sin and so chose God, because He chose and had it in His plan. They, we, still choose. and we always had the ability to do so, but we didn't. Not even one of us did. So when God entered in and manifested Himself in our lives, some have chosen God, but not all, and some seem to go back to as they were before after hearing His call.
Gal 1:6 I am astonished that you are so quickly deserting the one who called you by the grace of Christ.
The Galatians had hear, and went back away from God. And are you not saying that can't happen? But it did and does.
So the question Paul asked the Galatians was,
Gal 3:3 Are you so foolish? After beginning with the Spirit, are you now trying to attain your goal by human effort?
And also
Gal 3:5 So then, does He who provides you with the Spirit and works miracles among you do it by the works of the Law, or by hearing with faith?
I am not a "Freewiller", nor am I hung up on predestination. It seems to me that God's choosing me goes perfect with me choosing Him after He choose me. And I choose to hear from Him everyday, and He chooses to talk to me every day. We have a relationship! And that gives me great joy and a zealousness that others should have that also. They can. They can choose Him, and the fact that they won't until He intervenes does not mean they can't choose Him. If He intervenes in their life, perhaps they will choose to listen to Him, and then He will treat them like His children and will love them, teach them, and reprove them. The offer is out there with the encouragement to repent and choose Him.
Rev 3:19,20 Those whom I love, I reprove and discipline; therefore be zealous and repent. Behold, I stand at the door and knock; if
anyone hears My voice and opens the door, I will come in to him and will dine with him, and he with Me.