'Again' in the Bible

For if, after they have escaped the defilement of the world through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in it and overcome, the last state has become worse for them than the first.

But it has happened to them according to the true proverb, "The dog turns to his own vomit again," and "the sow that has washed to wallowing in the mire."