Sproul begins with the philosopher Immanuel Kant (1724-1804), who argued that we have to believe as if God exists because without that idea, morality, ethics, and justice would be non-existent and it would lead to meaningless. The problem with that was that argument did not hold up long, for Frederick Nietzsche, John Paul Sarte, and Albert Camus came along later and argued that was not being honest.
The apostle Paul argued in a similar way; that if there was no resurrection, then life is meaningless.
Then Sproul works through Biblical texts such as:
1 Corinthians 15:12-19
1 Corinthians 15:1-11