Still waiting for a clear statement in scripture that regeneration precedes faith.
You will not find it because it is not there.
Since you need help with understanding words and their meanings here you go.
"Faith" is belief and confidence in the truth of something; in this case (see Hebrews) God's promises specifically, and God's word more generally, whereas "faithfulness" is fulfillment of one's promises or vows.
Faithfulness is one of the characteristics of God's ethical nature. It denotes the firmness or constancy of God in His relations with men, especially with His people. It is, accordingly, one aspect of God's truth and of His unchangeableness. God is true not only because He is really God in contrast to all that is not God, and because He realizes the idea of Godhead, but also because He is constant or faithful in keeping His promises, and therefore is worthy of trust (see TRUTH). God, likewise, is unchangeable in His ethical nature. This unchangeableness the Scripture often connects with God's goodness and mercy, and also with His constancy in reference to His covenant promises, and this is what the Old Testament means by the Faithfulness of God (see UNCHANGEABLENESS).
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That explanation relative to Gal 5:22 is incomprehensible. Anyway, the word isn't faithfulness, it's faith. although faithfulness does flow from it. Taken from NKJV - it being your translation of choice - we see that in 2 Pet 1:1 (below), "faith" is "pistis" - the same word as in Gal 5:22. The KJV, however, in both places translates it as "faith". Moreover, in the NKJV, "faithfulness", in the NT, is used as faithfulness, in only two places: Rom 3:3 and Gal 5:22. On the other hand, "Pistis" is translated as "faith" and is predominately used some 243 times - although I didn't individually evaluate each and every verse.
But most importantly, we also see in 2 Pe 1:1 - again from your translation - that faith is only obtained by (through) the righteousness of Christ. That means faith, "pistis", came unto them only by becoming born-again, because only those born-again have the righteousness of Christ imputed unto them. By that verse alone, should we choose to look no further, we can see without question, that faith (pistis), only accompanies being born again and cannot precede it.
[2Pe 1:1 NKJV] 1 Simon Peter, a bondservant and apostle of Jesus Christ, To those who have obtained like precious faith with us by the righteousness of our God and Savior Jesus Christ:
In the KJV, we see in Gal 2:16, that being born again occurs first because it is only by the faith of Christ, that we believe, and the faith of Christ is only through spiritual rebirth, as Gal 5:22 so states. Now, before you say it, I realize in Gal; 2:16, (NKJV), the "of" was translated as "in', However that is incorrect for several reasons. For one, because God explicitly used "in" in the verse where He wanted "in" used, so had He wanted the "of" to be "in", He would have also explicitly stated that way, but He didn't. Second, again referring back to 2 Pe1:1, we see that faith comes only by the righteousness of Christ, not man. So, if it is a true faith, it cannot be self-generated nor produced. Given all that, it is obvious that the "of" of Gal 2:16, is correct and the "pistis" of Gal 5:22 actually is "faith", not "faithfulness", which accompanies spiritual rebirth.
[Gal 2:16 KJV] 16 Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified.