"Tough as nails." "Hard as a rock." "Solid as a brick." Those are our metaphors for strength and sturdiness. God, however, hardly ever seems to agree. The divine preference is for security in fluidity and victory in vulnerability, defying our concrete convictions.

Do you remember as a kid playing the ancient game "scissors, paper, rock?" You and a friend would beat three counts into your palm with a fist, and on the third count would reshape your fist into either "scissors" (two fingers extended), "paper" (a flattened hand), or "rock" (keeping the fist). You "won" based on the following rules: Scissors cut paper, paper covers rock (this one always seemed the game's weak point), and rock breaks scissors. The game was an expression of power - who was stronger, who had control - without hav…