Then Joshua built an altar to Yahweh, the God of Israel, in Mount Ebal,
It is important for God’s people to declare their allegiance to His revealed will publicly among the unbelievers with whom we live (cf. Acts 1:8). This helps them understand why we live as we do, and it brings glory to God when His people then proceed to live upright lives and demonstrate His supernatural power (cf. Matthew 5:16).