But it's your only basis for changing the "they" within this passage from what's clearly referring to false teachers to a 'believer' (your word, not Peter's) in Christ Jesus for the forgiveness of their sins.
I have changed nothing.
I have bolded clearly each reference in the passage.
Please post the verse where this occurs and indicate what you believe from the verse what your point is.
18 For when they [false teacher's] speak great swelling words of emptiness, they [false teacher's] allure through the lusts of the flesh, through lewdness, the ones who have actually escaped [believer's] from those who live in error. 19 While they [false teacher's] promise them [believer's] liberty, they themselves [false teacher's] are slaves of corruption; for by whom a person is overcome, by him also he is brought into bondage. 20 For if, after they [believer's] have escaped the pollutions of the world through the knowledge of the Lord and Savior Jesus Christ, they [believer's] are again entangled in them and overcome, the latter end is worse for them than the beginning. 21 For it would have been better for them [believer's] not to have known the way of righteousness, than having known it, to turn from the holy commandment delivered to them.[believer's] 22 But it has happened to them [believer's] according to the true proverb: “A dog returns to his own vomit,” and, “a sow, having washed, to her wallowing in the mire.” 2 Peter 2:18-22
Those is verse 18 who have escaped those who live in error, are those in verse 20 who have escaped the pollutions of the world.
The bottom line is "they" who have escape the pollutions of the world, have done so through the knowledge of Jesus Christ.
They in verse 20 who are entangled again and overcome, are those who have escaped through the knowledge of Jesus Christ, in which they have known the way of righteousness, and have escaped they pollutions of the world.
- It would be better for those who have known the way of righteousness, to have never known it, than to turn back and become entangled in the pollutions of the world again and overcome by it.
It would be better for unbelievers, than for believers who turn back to the pollutions of the world, and are overcome by it.
Unbelievers go to hell.
Those who turn back to the world and live as the sons of disobedience, after having known the way of righteousness through the knowledge of Jesus Christ, will definitely have it worse in hell than those who never knew the way of righteousness through Jesus Christ.
That is what Peter is teaching us here in 2 Peter 2, using the sons of God, angels, as an example.
For if God did not spare the angels who sinned, but cast them down to hell and delivered them into chains of darkness, to be reserved for judgment; 2 Peter 2:4
JLB