'Pillar' in the Bible

and if I delay, that thou mayest know how it behoveth thee to conduct thyself in the house of God, which is an assembly of the living God -- a pillar and foundation of the truth,

He who is overcoming -- I will make him a pillar in the sanctuary of my God, and without he may not go any more, and I will write upon him the name of my God, and the name of the city of my God, the new Jerusalem, that doth come down out of the heaven from my God -- also my new name.