Why were the Pharisees testing Jesus in John 8?
The Pharisees tested Jesus in John 8 to drive Him into a corner. They wanted to hear Him claim to be the God of Abraham, which they deemed blasphemy. They sought a cause to put Him to death. This was their goal.
Les teaches that in this portion of Scripture the Pharisees are literally testing Jesus and trying to drive Him into a corner. Whenever He would claim to be God, they considered it pure blasphemy. They wanted to hear Him say in uncertain terms that He was the God of Abraham, so they would have every cause to put Him to death. That was as blasphemous as they thought a person could get.