Cain smiting Abel with God’s Expulsion of Cain from the Garden of Eden Sebastiano Ricci (1659-1734)

The picture has something of this: people, woman, two, water, nude, man, recreation, rock, cave, outdoors, girl, group, nature, motion, sea.
Perhaps it’s a painting of a man and a woman in a cave with a man reaching for a woman on the other side of the painting, with a sky in the background.