Zion

 Thus saith the Lord GOD, Behold, I lay in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure foundation.. 

Isaiah 28:16 

Isaiah, sometimes called the 5th Gospel, is full of references to the true Jewish Messiah, Jesus Christ, but Jews often cannot see it. If you yourself cannot see it, compare Matthew 21:42, where Jesus says about Himself: The stone which the builders rejected has become the cornerstone, quoting Psalm 118. So Zion has a Christian meaning these days- it’s not about land in Israel, it’s about the Church.