Charles Ellicott Commentary Ezekiel 18:27

"Again, when the wicked man turneth away from his wickedness that he hath committed, and doeth that which is lawful and right, he shall save his soul alive." — Ezekiel 18:27 (ASV)

Shall save his soul alive. — This does not mean that anyone can by their own power save themselves, for that question is not under consideration here at all, but that the consequence of a certain course of conduct will be their salvation, and that adopting that course is within their own choice.