Jacob was a natural manipulator. Born the second of a pair of twins, he came out of his mother’s womb hanging on to Esau’s heel. That makes sense: why expend your own effort when you can just ride along in big brother’s slipstream? That act, probably completely unconscious, defined him and became his name, and “grasping the heel” became a Hebrew metaphor for taking the easy way out.
Cheating, we call it. And Jacob did it over and over again.