'Again' in the Bible

For if after they have escaped the pollutions of the world through the knowledge of the Lord and Saviour Jesus Christ, they are again entangled therein, and overcome, the latter end is worse with them than the beginning.

For it would have been better for them to have had no knowledge of the way of righteousness, than to go back again from the holy law which was given to them, after having knowledge of it.

But it is happened unto them according to the true proverb, The dog is turned to his own vomit again; and the sow that was washed to her wallowing in the mire.