I also saw under the sun this example of wisdom that greatly impressed me:
A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.Matthew 7:18 KJV
There was once a small city with only a few people in it. And a powerful king came against it, surrounded it and built huge siege works against it.Ecclesiastes 9:14 NIV
Moreover, no one knows when their hour will come: As fish are caught in a cruel net, or birds are taken in a snare, so people are trapped by evil times that fall unexpectedly upon them.Ecclesiastes 9:12 NIV