Psalm 18:2 says The Lord is my rock, my fortress and my deliverer; my God is my rock, in whom I take refuge, my shield and the horn of my salvation, my stronghold. He is our shelter from the storm. All we have to do is cling to His promise. He will never leave or forsake us. He is always there, holding out a hand to pull us up from the depths. All we have to do is reach out and take it.
A hollow square to represent the shelter (Our Father) that we take refuge in and the white stones represent the peace and hope that we find within that shelter.