2 Timothy 3:16-17
"All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, throughly furnished unto all good works."
Anything contrary to the above. For instance, they will use some scripture instead of "all scripture" and it will be mixed with philosophy; or even no scripture at all. They will convince their followers that "the man of God" spoken of is, surely, not all believers in Messiah, but only a special class of them who have been ordained to instruct the ignorant masses. They do this to fulfill their own lusts for power and wealth. So, they will promote their own brand of righteousness and this only serves to enflame the lusts of those they lead astray...thereby, perpetuating folly, for generations to come.