Hebrews

Explains Jesus' superiority and encourages believers to persevere in faith amid persecution.

Chapter 6

KJV - Hebrews 6:4

For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost,

It's impossible for those who used to be enlightened, tasted divine gifts, and experienced the Holy Spirit, to go back.

King James Version

Simple English

* work in progress, there will be mistakes