house built on sand and house built on the rock

flood storm house rock sand stone foolish wise build flooding strong weak bible parable desert christianity solid wisdom religion obedience salvation guidance destruction damaged fragility sink cliff lesson foundation faith builder built metaphor christian jesus christ gospel biblical teaching obedient firm matthew testament good bad evil faithful resilience shelter moral scripture divine stability spiritual trust eternal covenant redemption savior grace heaven judgment blessing discipleship parabolic providence heavenly miracles hope revelation truth virtue holiness sacred doctrine righteousness