There is no such thing as untested Christian faith.
Testing is part of Christian experience. Not in the sense that God sets us tests we have to pass to qualify to be Christian. If he did, none of us would make the grade! But our Christian faith is tested and ‘proved’ in life generally when we face sickness, bereavement, and family problems, or when we experience doubt, depression or injustice. We naturally start wondering, ‘Is God really there? Does he care about my life? Why do I have to wait so