Why did Jesus die on the cross?
He died voluntarily to pour out salvation to the whole human race. Though He could have stopped it, He permitted sinful men to nail Him to a Roman cross, subjecting Himself to suffering and death. His death was an act of grace, providing salvation that no one deserves.
Les teaches that the God of creation, the invisible triune God, had one person step out and take on human flesh, walk among sinful men, subject Himself to their desires, and let them nail Him to a Roman cross. He permitted it, though He could have zapped the whole Roman empire with one word. Of His own volition, He subjected Himself to those people who put Him on a cross where He suffered and died simply because He was ready now to pour out salvation to the whole human race. Les says that's grace; we don't deserve it. He applies the same grace to the blessings we enjoy, noting every breath, every bite of food, and every good thing comes by grace we do not deserve.