The Ultimate Union: When God Moves In — The Interior Castle

Teresa enters the seventh mansion, abashed yet compelled to speak of sublime mysteries. Souls here receive spiritual nuptials unlike earlier favors: God introduces the bride into His presence chamber, a second heaven where darkness of mortal sin is unimaginable and intercession for sinners flows from compassion learned within. The Blessed Trinity reveal themselves preceded by dazzling illumination; the soul understands It dwells in her by presence and power, not by seeing with bodily eyes.

This indwelling is permanent though not always felt equally; the soul cannot summon or dismiss it at will. Effects include great courage, zeal for God's honour, contempt for earthly things, and deep humility. Even when faculties wander, the centre of the soul seems never moved from its resting-place, so the soul appears divided yet remains anchored in God.

Teresa distinguishes soul, spirit, and faculties: they are one yet not identical, an interior world of transcendental mysteries. She warns against fancying the soul in darkness when God is present, urges peace, and teaches that these nuptials differ from betrothal and from earlier unions. The chapter prepares readers for marriage language Teresa will refine next, insisting such favors are beyond control yet leave calm at the soul's centre when life outside still storms.