As a child of God, you have the nature of God because of Christ in you. But that is not enough because you need to be adequately empowered for Christ in you to manifest. When you are born again, the Spirit of God is in you but to demonstrate your sonship, you need adequate power, which is the power of God with you.
John 20:19-22.
19-Then the same day at evening, being the first day of the week, when the doors were shut where the disciples were assembled for fear of the Jews, came Jesus and stood in the midst, and saith unto them, Peace be unto you.
20-And when he had so said, he shewed unto them his hands and his side. Then were the disciples glad, when they saw the Lord.
21-Then said Jesus to them again, Peace be unto you: as my Father hath sent me, even so send I you.
22-And when he had said this, he breathed on them, and saith unto them, Receive ye the HolyGhost.
The first encounter the disciples had with Jesus after his resurrection was the release of the HolySpirit into them and He gave them the responsibility to do exploit in his name.
Acts 1:4-8.
4-And, being assembled together with them, commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, saith he, ye have heard of me.
5-For John truly baptized with water; but ye shall be baptized with the HolyGhost not many days hence.
6-When they therefore were come together, they asked of him, saying, Lord, wilt thou at this time restore again the kingdom to Israel?
7-And he said unto them, It is not for you to know the times or the seasons, which the Father hath put in his own power.
8-But ye shall receive power, after that the HolyGhost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.
But here, Jesus commanded them to wait in Jerusalem for the promise of Father in Joel 2:28. They need God with them in addition to God in them to do exploit. This is in two dimensions; it is the combination of God in you and God with you that gives you power. They already have HolyGhost in them before that time but they need HolyGhost upon them, they need to be baptized with the HolyGhost, they need to be completely covered by HolyGhost to have the power of HolyGhost.
When you are covered by the Lord, no devil will break you down. The name of the Lord is a strong tower, the Righteous runs into it and he is safe. When Jesus was talking about power, he was talking to believers and not to the sinners, that though you have HolyGhost in you, you are born again, but don’t go yet, be adequately empowered for you to level all challenges of life.