Augustine's understanding of justification as the regeneration of baptism becomes Newman's via media. And in this profound belief in the baptismal gift of the divine indwelling is the seed and centre of Tractarian mysticism. Augustine frequently cites Romans 6.3-6 when writing against the Pelagians and Pusey's tract on baptism also closely considers how this passage portrays the soul as co-interred and co-crucified with Christ. As a death to sin and a supernatural birth to new life, baptism for Pusey is truly a regeneration, the generation of the soul from God through grace. Just as the Incarnation united human nature with the divine, so the divine indwelling in the soul through Christ's Spirit implies that man is once again taken up into the divine nature. Both Newman's Lectures on Justification and Pusey's 'Scriptural Views of Holy Baptism' centre on the mystic presence of Christ in the soul, mediated through the sacraments.