There are other scriptures Fred, I won't post them all but here is another. Perhaps the OSAS people ought to add a caveat?
"If they have escaped the corruption of the world by knowing our Lord and Savior Jesus Christ, and are again entangled in it and overcome, they are worse off at the end than they were at the beginning. It would have been better for them not to have known the way of righteousness, than to have known it and then to turn their backs on the sacred command that was passed on to them."
2 Peter 2:20-22
Well, this fits the description of the dogs and the sows and not a good description for the believers.
20 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.
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.
22 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.
Philippians 3:1-3 King James Version (KJV)
3 Finally, my brethren, rejoice in the Lord. To write the same things to you, to me indeed is not grievous, but for you it is safe.
2
Beware of dogs, beware of evil workers, beware of the concision.
3 For we are the circumcision, which worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.