Read: Psalm 81 A dangerous process is going on in lot of people's life: the process of alienation from God. The process is described in v.7-13.
Step 1. – v.9. and 12. – We don't listen to God's Word.
Step 2. – v.10. and 12.b – We don't obey to God's Word. God gave a commend, they didn't obey because they were not listening.
Step 3. – v.13a. – Our heart is hardened. If we don't listen and obey the Word of God, He allows our heart to be hardened. The hardened heart is a result of a process, which process began with the lack of willingness to listen to His Word.
Step 4. – 13b. – We convince ourselves about our own truth. Our perpective will narrow to our own understanding.
Step 5. – total depravity
The process started with not listening to the Word of God and leads to total depravity. When someone closes out the word of God from his/her life the result will be that he/she will only have her own truth to stand on. And if someone lives his/her life on his/her own truth, will destroy it. Following our own advice and our own understanding always leads to depravity.