3 Bible Verses about Boasting, Foolish

Do not allow anyone to deceive you in any way, for it will not occur until the rebellion comes first and the man of lawlessness becomes evident. [Note: This "rebellion" refers to a significant falling away from the teaching and practice of true Christianity (See I Tim. 4:1), characterized by the rise of an authoritarian religious leader]. This man is doomed to be destroyed [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.

Such people are like springs that give no water and clouds driven by the winds. [Only] the blackest darkness awaits them. [Although] their talk is big, what they say is worthless, and by [offering people] fleshly desires [i.e., sexual gratification], they lead people astray, who are barely escaping from the error of the world.

But a certain man named Simon, from there in Samaria, who had been amazing the people with his magical powers, was claiming to be someone great. Everyone, from the least to the greatest [in importance], was being impressed by him. They were saying, "This man is being called Great [and has] power from God."