Song of Songs 8:9

If she be a wall, we will build upon her a palace of silver: and if she be a door, we will inclose her with boards of cedar.

Cross-reference

Song of Solomon 8:10 directly answers 8:9: the Shulammite confirms she was a wall, bringing peace.

Psalm 144:12 compares daughters to corner pillars—similar architectural metaphor for strength and beauty.