Proverbs 5:1-2 Amp

My son, be attentive to my wisdom (godly wisdom learned by costly experience), Incline your ear to my understanding: That you may exercise discrimination and discretion (good judgment), And your lips may reserve knowledge and answer wisely (to temptation).

In most cases, a lack of knowledge causes people to error.  We may know to do better in our lives, but we weaken when we fail to be attentive to bible wisdom.  Our hearts and heads need to be filled with the word of God and the knowledge it provides.  The Bible keeps us sharp and aware of the pitfalls so we can avoid them.