When Christ calls a man, he bids him come and die.
One act of obedience is better than one hundred sermons.
Christianity without discipleship is always Christianity without Christ.
God loves human beings. God loves the world. Not an ideal human, but human beings as they are; not an ideal world, but the real world. What we find repulsive in their opposition to God, what we shrink back from with pain and hostility, namely, real human beings, the real world, this is for God the ground of unfathomable love.
A god who let us prove his existence would be an idol.