|ABRAHAM AND ISAAC|
In this story, Abraham has been called by God to offer his only son Isaac as a sacrifice. Abraham sets off to do his grim duty, determined to follow the instructions of the God of the universe, no matter how counter it seems to everything that has passed before.
Of course, once he has proved that he was willing, God stops him and tells him to offer a ram instead.
I won't go into the theology of this story here though, just the art. Abraham is old and determined; Isaac is young and trusting, but puzzled.