God/Heaven help (someone)

1. something that you say in order to warn someone that they may be hurt or punished.

Heaven help you if your father catches you wearing his best jacket!

2. something that you say when you are worried about someone who is in a very dangerous or unpleasant situation.

God help anyone who has to be outdoors on a dreadful night like this!

• the whole shebang
• the whole shooting match
• the whole works
• the whys and the wherefores
• the whys and wherefores
• the whys and wherefores of
• the whys and wherefores of something
• the witching hour
• the woman in the street
• the woman of dreams
• the woman of your dreams
• the woman on the Clapham omnibus
• the woman on the street
• the wooden spoon
• the works
• the world and his wife
• the world is oyster
• the world is your oyster
• the worm has turned.
• the worse for wear
• the worst-case scenario
• the worst of both worlds
• the writing is on the wall
• the writing on the wall
• the wrong side of the tracks