Coke Bear said:
Yes, we are justified by faith, HOWEVER, we can LOSE that salvation with our actions.
Yes, the Bible is quite clear on this.
"For if, after they have escaped the pollutions of the world through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and overcome, the latter end is worse for them than the beginning. For it would have been better for them not to have known the way of righteousness, than having known
it, to turn from the holy commandment delivered to them. But it has happened to them according to the true proverb: "A dog returns to his own vomit," and, "a sow, having washed, to her wallowing in the mire." (2nd Peter 2:20-22)
"When an unclean spirit goes out of a man, he goes through dry places, seeking rest; and finding none, he says, 'I will return to my house from which I came.' And when he comes, he finds
it swept and put in order. Then he goes and takes with
him seven other spirits more wicked than himself, and they enter and dwell there; and the last
state of that man is worse than the first." (Luke 11:24-26)
"And having been perfected, He became the author of eternal salvation to all who
obey Him" (Hebrews 5:9)
Continuing to abide in Christ and obey him is mandatory to the process of salvation.
I cannot speak to the overall theology of this website or writer, but on the specific topic of OSAS he does a pretty good takedown.
False Assumptions About Eternal Security