to give oneself to (esp. of a woman to a man); to surrender oneself to
to leave to chance; to resign oneself to one's fate; to leave the rest to heaven
to leave to take its own course; to let a matter take care of itself
to leave to one's imagination
to do as one wishes; to suit one's convenience; to happen as one expects
to let things end up as they will; to let nature take its course