The Apostle Paul did not want to know anything except Jesus and His crucifixion (I Cor 2:2). This understanding, this revelation, this preaching is the Power of God that brings to your life Salvation (Sozo, Soterion, defender, deliverance, prosperity, health, victory) Romans 1:16.
Romans 1:16-17
16. For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek.
17. For therein is the righteousness of God revealed from faith to faith: as it is written, The just shall live by faith.
The Gospel of Christ reveals righteousness, your position, a right standing. Through these teaching, Pastor Roger reveals who you are and what has already been provided through Jesus' death, burial and resurrection. With this revelation and understanding, you can walk in and display the works of Jesus with love and boldness.