In Catholic theology, Purgation is a process of purification after death for those who die in God's grace but still require cleansing from the temporal effects of sin. It's not a place of punishment, but a refining fire, a process fueled by divine grace. Through this process, souls undergo a profound spiritual growth, shedding remaining attachments to earthly things and aligning themselves more fully with God's will. This involves a moral transformation, a refining of the heart and will, leading to a deeper understanding of God's love and a greater capacity for love in return. It's understood as a necessary step on the path to holiness, a final preparation for the perfect union with God in Heaven.