But Our Lord has not called me to live inside a physical enclosure. In our cloistered heart analogy, the "symbol" is grillwork... not brick walls.
"The Name of the Lord is a strong tower; the just man runs into it and is safe.” (Proverbs 18:10)
What is my strong tower? Not stonework. That would be much too fragile. Stones are subject to crumbling. The Name of the Lord is not.
I am not called to flee from the world. I'm called to face it, day after day after day, but I do not have to do so unaided. I am called to relate to the world through the will of God. I can pray for the world, and deal with every situation and every person I encounter or even hear of, through the "grillwork" of the will of God. I can run to Our Lord and I can remain in Him.
As I cling to Jesus, He gives me all I need to face the world.
"We know that God makes all things work together for the good of those who love him, who have been called according to his decree." (Romans 8:28)
'We are afflicted in every way possible, but we are not crushed; full of doubts, we never despair. We are persecuted but never abandoned; we are struck down but never destroyed.' (2 Corinthians 4:8-9)
'You are my shelter; from distress you keep me. With safety, You ring me around.' (Psalm 32:7)
'God is our refuge and strength, an ever present help in trouble. Thus we do not fear, though the earth be shaken and the mountains quake to the depths of the sea; though its waters rage and foam and mountains totter at its surging. The Lord of hosts is with us. Our stronghold is the God of Jacob.' (Psalm 46:2-4)