741. Anyone can see that Noah entered the ark because of the waters of the flood means that he was protected.
The tests that we undergo are nothing else than battles between the evil spirits and angels who are present with us. The evil spirits summon up every wrong that we have ever done or even considered from childhood on. So they stir up both what is evil and what is false in us and condemn us for it. Nothing gratifies them more; it is the central pleasure of their lives. But through the angels the Lord protects us and prevents evil spirits and demons from pushing beyond the furthest limits of our endurance and drowning us.
(References: Genesis 7:7)