Some Christians object to meditation because it uses the imagination. It is wiser, however, to give our imagination to God to be retrained than to withhold it. The process of spiritual formation allows every part of our being to be embraced and schooled by God, and the imagination needs retraining as much as anything else. If we ignore the imagination, it finds entertainment of its own. When activated by the images and truths of Scripture, the imagination enables the penetrating Word of God to become active in our lives.
(from When the Soul Listens)