FOUNDATION
The foundation of a building in Hebrew is translated from words mostly derived from “yãsadh”, “found”; In Greek, it is a translation of “themelios” (Lk. 6:48, 49; 14:29; Acts 16:26, etc.)
It is used metaphorically:
of Christ, as the foundation of the Church (1 Cor. 3:11);
of the apostles or prophets as the foundation, of which Christ is the chief corner stone (Eph. 2:20); the foundation of repentance (Heb. 6:1).
In Ps. 11:3: “If the foundations are destroyed,” the Hebrew term is “shath.”