The right kind of sorrow is often needful and brings with it certain benefits. Yet, it is in the joy of the LORD that God's people specifically find strength.
Men get into trouble when they begin to think too highly of their own thoughts. If they are not careful, these opinions will become the driving force in their decision making. This will mean that the word of God finds itself in competition for the seat of authority. The sad truth is that men often fail to notice within themselves this substitution of authorities. While their mouths may falsely testify of a loyal submission to the scriptures, their actions testify that their opinions are instead leading the way. The Devil works subtly because he knows how to gradually lead men astray by keeping them from noticing any abrupt changes within their hearts and outward deeds. By the time rebellion is detected, the Devil has a stronghold only broken by prayer and heartfelt submission to God.
Few people would readily admit to trusting in lies; however, any individual placing his trust in something outside of the words of God is in danger of doing so. Through the prophet Jeremiah, the Lord warned His people of this danger on numerous occasions (Jeremiah 7:4, 8; Jeremiah 13:25; Jeremiah 29:31). Even today, people all over the world choose to bow down to idols and images, thinking these creations of wood, stone, or metal can assist them in some way. Other people who would never think to bow to an idol place their trust in education or something similar. Unfortunately, there are going to be multitudes sorely disappointed for they have unwittingly placed their trust in the lies of this world.
