Some people say that there is probably no god and there is no life after death, and they just live for the lust of men. However, good and wise people feel God the Creator just by seeing things He created. At the sight of the birth and death of man, fallen leaves, and the sunset and the night, they may feel the Day of Judgment. Such people never live with fear for the Judgment at all. It's because they believe God is the One who loves them as well as the Creator of all things and the Judge. Thus, they can peacefully live in His love.
"And inasmuch as it is appointed for men to die once and after this comes judgment" (Hebrews 9:27).