“Lord, Lord,” and “In the name of Jesus” are saying not to take lightly. Yet people say them loosely not understanding their authority or the power they have in the spiritual realm. Jesus makes it clear that He wants to know us intimately, so saying Lord, Lord without trying to build a personal relationship with Him means nothing to Him. In other words, He’s saying keep His name out your mouth if you’re not trying to obey His Words.
‘Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only he who does the will of my Father who is in heaven. Many will say to me on that say, ‘Lord, Lord, did we not prophesy in your name, and in your name drive out demons and perform many miracles?’ Then I will say to them plainly, ‘I never knew you. Away from me you evildoers!’ (Matthew 7:21-23)
God is not impress with how religious or Holy we sound. He sincerely wants us to know Him and imitate Him. He’s not playing around. He wants us perfect as we can and stop making excuses by telling ourselves it’s too hard to change. Nothing is too hard for God. We need to put our hand to the plow and don’t turn back.
But many Christian let mountains of circumstances stand in their way because they don’t have authority to say to them, “Be removed!” Why? Because the Word of God don’t abide in them. See whatever they ask in Jesus’ name Jesus isn’t willing to do. The Devil even question them because he too knows they don’t know Jesus personally.
Some Jews who went around driving out evil spirits tried to invoke the name of the Lord Jesus over those who were demon-possessed. They would say, “In the name of Jesus, whom Paul preaches, I command you to come out. Seven sons of Sceva, a Jewish chief priest, were doing this. One day, the evil spirit answered them, “Jesus I know, and I know Paul, but who are you?” Then the man who had the evil spirit jumped on them and overpowered the all. He gave them such a beating that they ran out of the house naked and bleeding. (Acts 19:13-16)
It’s one thing when Jesus recognize us as not one of His children it’s another when the Devil and his demons know we’re fake. Back then they were trying to use Jesus name for their own purpose and today Christians still do.
The demon recognized authority of Jesus and Paul because they were representatives of God. Yes demons know who represents God and who doesn’t, so be careful using Jesus’ name because it just may provoke them to attack you.