“Be ready at any time to give a defense to anyone who asks you for the reason for the hope that is in you.” 1 Peter 3:15.
Whether you stand before the council (Acts 4) or the gates of Hell, it will be insufficient to simply wave the Book of the Word before the enemy. You must also be able to testify to your belief. This requires studying the Word and being in fellowship with God through the Holy Spirit. Time to get with the program.