Zechariah 10:4

4 From him will come the keystone, from him the nail, from him the bow of war, from him will come every ruler;

Ephesians 2:20

20 Resting on the base of the Apostles and prophets, Christ Jesus himself being the chief keystone,

1 Peter 2:6

6 Because it is said in the Writings, See, I am placing a keystone in Zion, of great and special value; and the man who has faith in him will not be put to shame.