Pray as if everything depended upon God and work as if everything depended upon man. -- Francis Cardinal Spellman, c.1946
God gives every bird its food, but He does not throw it into its nest. -- J. G. Holland
Call on God, but row away from the rocks. -- Indian Proverb
I especially like the last one. Believe in God, but don't tempt Him. Use common sense and don't step in front of that bus in hopes God will save you. He might, but He expects us to do some measure of the work/thinking for ourselves. Otherwise, we'd be mear puppets.