§ 02 · King James Bible
2 Peter 2:21
For it had been better for them not to have known the way of righteousness, than, after they have known it, to turn from the holy commandment delivered unto them.
Simple English
It's better for them not to know righteousness than to learn it and then leave it, as they should stick to the sacred rules given to them.
* Work in progress - there may be occasional inaccuracies