Let no one deceive you in any way. For this cannot be, unless the apostasy will have arrived first, and the man of sin will have been revealed, the son of perdition
Other versions
King James Version
Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;English Standard Version
Let no one deceive you in any way. For that day will not come, unless the rebellion comes first, and the man of lawlessness is revealed, the son of destruction,New International Version
Don't let anyone deceive you in any way, for that day will not come until the rebellion occurs and the man of lawlessness is revealed, the man doomed to destruction.