'Pillars' in the Bible

I will display marvels in the sky above, and signs on the earth below, blood and fire, and pillars of smoke.

and when they perceived the mission which was graciously entrusted to me, they (that is to say, James, Peter, and John, who were considered to be the pillars of the Church)

Then I saw another strong angel coming down from Heaven. He was robed in a cloud, and over his head was the rainbow. His face was like the sun, and his feet resembled pillars of fire.