To most believers today (God’s people) there is no seen danger. They reject this warning to abandon what probably is a twisting of God Himself and even of His word by man. It seems this warning is for those who believe but who would sooner have mans understanding than to seek God’s own for their life.
God’s word is meant to provoke our mind to seek Him for truth.
But as many as received Him, to them He gave the right to become children of God, even to those who believe in His name,
John 1:12 NASB
What does it mean to possess a right to become something?
Does that right give us the power to obey the command to come out from among them?
20 teaching them to observe all that I commanded you; and lo, I am with you always, even to the end of the age.”
Matthew 28:20