'Foundation stone' in the Bible
And Solomon accomplished all the work from the day the foundation stone [was laid for] the house of Yahweh until its completion, and the house of Yahweh was finished.
Let the Temple be rebuilt where they offered sacrifices. Let the foundations thereof be laid with a height of 60 cubits and a width of 60 cubits, constructed with three layers of foundation stone interlaced with a row of new timber, the expenses for which are to be paid from the king's treasury.
therefore this is what the LORD God says: "Look! I am laying a foundation stone in Zion, a tested stone, a precious cornerstone for a sure foundation: Whoever believes firmly will not act hastily.
No one will be able to retrieve a cornerstoneor a foundation stone from you,because you will become desolate forever.This is the Lord’s declaration.
But, for fear I may be hindered, I now write, so that you may have rules to guide you in dealing with God's household. For this is what the Church of the ever-living God is, and it is the pillar and foundation-stone of the truth.