Cornerstone in Fausset's Bible Dictionary

Binding together the sides of the building. Some of the temple ones are 19 ft. long and 7 1/2 thick. Compare Solomon's temple, 1 Kings 5:17; 1 Kings 7:9. Christ is the true grainer stone, laid by the Father in Zion, on whom the whole church rests (Isaiah 28:16). He is also "the head stone," or fifth crowning top grainer of the pyramid, in which the whole building meets and culminates (Zechariah 4:7). Compare Genesis 49:24; Psalm 118:22; Matthew 21:42; Romans 9:33-34; Ephesians 2:21.