[for] he opposes [the true Gospel message] and exalts himself against everything that is called "God" or that which is worshiped. So, he sits in God's temple [i.e., the church ?] displaying himself as [though he were] God.

So then, brothers, stand firm [in the faith], and hold onto the [inspired] traditions which you were taught, whether by word [of mouth] or by a letter from us.

Now we command you, brothers, in the name [i.e., by the authority] of our Lord Jesus Christ, that you people stay away from every brother [or sister] who lives an idle life [See note on I Thess. 5:14], and not according to the [inspired] tradition which you received from us.