Matthew 16:18
And I also tell you, [although] you are Peter [i.e., a stone], it is on this rock [i.e., the truth you have just confessed] that I will build my church and [not even] the gates of the unseen place of departed spirits will win out over it [i.e., all efforts to stamp out the church by killing Christians will fail].
Galatians 2:9
Also, when they perceived that this [special] favor [of preaching to Gentiles] was granted to me, James, Cephas [i.e., Peter] and John, the highly regarded pillars [i.e., leaders of the church] extended to me and Barnabas their right hands [signifying an agreement] to share [in the preaching of the Gospel], with us going to the Gentiles and they going to the circumcised ones [i.e., Jews].
Revelation 3:12
I will make the person who has victory [in the Christian life] a pillar in the Temple of my God [i.e., probably a reference to heaven], and he will never leave it. And I will write on him the name of my God, the name of the city of my God, the new Jerusalem which is coming down from heaven from my God [See 21:2, 10] and my own new name.