Belshazzars Feast
This is how the painting looks today.
However some time ago it was cut to fit on some bloke's wall, and that bloke didn't even bother to cut it straight - he cut it at an angle, so now everybody is leaning to the left.
If you look at the water coming out of the jug, you can see how much it is leaning by. Here's my guess.
Feel free to get your brushes out, and paint over the black parts to recreate the original painting.