The fundamental confession of a Christian is, “Jesus is Lord. He is my Lord. I am His slave.”
“…that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead, you will be saved; for with the heart a person believes, resulting in righteousness, and with the mouth he confesses, resulting in salvation.” (Romans 10:9-10, nasb).
"You call Me Teacher and Lord; and you are right, for so I am” (John 14:13, nasb).
“Jesus is Lord” means that He is sovereign, Master, and He is totally in charge.
Lord is used 747 times in the New Testament.
Even though we are called slaves of Christ, He calls us friends. Not only does he call us friends, but he has adopted us as Sons and exalted us as joint heirs with Him in glory.