Inner Being of a Christian

Why do I not act like Christ-like manner at times? I realized that Christ in me does not mean that I am no longer without sin. My old sinful nature is not ripped out from my heart. Christ is in my heart and with the help from the Holy Spirit, Christ changing me from the inside and lives through me as I live daily under His encouragements. I have learned that the truth is that while Christ dwells in me as a new nature, it is I, who should be willing to obey Christ (my new nature)rather than obeying sin (my old nature) (from my heart). Scriptures tells me that the spiritual warfare between my old nature and my new nature will go on continually for all believers. Also, from my experiences, I have learned that "learning and memorizing" of Christian doctrines are not important tools for the purpose of dealing with spiritual conflicts. Martin Lloyd-Jones, the English preacher and writer, once said: "It is perilously close to being sinful for any person to learn doctrine for doctrine's sake." Learning and knowing doctrines are important and we are to learn our Christian foundations of faith but not important when I am trying to deal with my daily conflicts as a Christian. I should be aware that my practice as a Christian is where God will meet me in the core, which is in my heart. Do I really glorify God in my heart? Is Jesus my Lord of my heart? With Christ in my heart, I will still sin by accident but not willingly (on purpose). I am reminded by the Word of God that God looks into my heart for my spiritual obedience rather than perfection. I will never be perfect as long as I live in my body. Like David's experiences, God meets me in my heart rather than my mind therefore I need to focus on the "heart of the matter". Scriptures: In Proverbs 4:23, "Above all else, guard your heart, for it affects everything you do." (NLT) In Proverbs 21:2, "People may think they are doing what is right, but the Lord examines the heart." (NLT) "David son of Jesse is a man after my own heart, for he will do everything I want him to do." Acts 13:22 & 1 Samuel 13:14 (NLT) Jesus said: "You must love the Lord your God with all your heart, all your soul, and all your mind." Matthew 22:37 The Lord said to Samuel, "Don't judge by his appearance or height, for I have rejected him. The Lord don't make decisions the way you do. People judge by outward appearance, but the Lord looks at a person's thoughts and intentions(heart)." 1 Samuel 16:7