Within the soul, as if in a bright interior chamber where the contemplative meets Christ in prayer, it's as if there is a secret chamber into which Christ can draw that person, to bring her to meet the Holy Spirit and the Father too, and to share Christ's secrets, about the life of God and the life of grace. Only those people who have sincerely tried to live in charity, humility and purity can enjoy such intimacy with God.
When a person meets Christ in a spiritual Communion, or in contemplation, it's as if she has a secret chamber - her own soul - where she can meet Christ, to adore Him, talk with Him, ask His advice, or rest in Him, even if her exterior life seems limited or restricted. Through Christ, furthermore, she can reach up to Heaven!
The soul of a person who freely chooses to sin can be pictured as a beautiful chamber, with a pair of inward-opening doors; but this place is filled by filthy water, which leaks into that room whenever that person sins. If he does not repent, he is in danger of drowning. Even worse, if he dies, unrepentant, the doors will be unable to open, inwards, because of the weight of the filthy water. He will be sealed with his sins forever, unable to enter Heaven.
There were ancient temples where pagans offered sacrifices, and kept their victims in a dark underground chamber. There are many people today who freely 'sacrifice' their own souls by their un holy practices; and by these sins they freely move away from the light of God towards the dark, eternal state of being-without-God, rightly called Hell.
An individual's soul can be pictured as being like a well-proportioned chamber, which that person can beautify even more by a holy life; and when he dies, the doors to Heaven, which open inwards, will be pushed open by God, Whose glory will pour into that beautiful place, as God invites the soul to come through the doors, to Heaven.
Through our union with Christ, we have access to the Father. When we receive Christ in Holy Communion, and are in a state of grace, it is as though we can enter, from within our own soul, a great glorious chamber which represents the Godhead, or rather, the inner life of God. What a privilege! And how often taken for granted!