Romans 5:2

Through Him we also have access by faith into this (remarkable state of) grace in which we (firmly and safely and securely) stand. Let us rejoice in our hope and the confident assurance of the glory of (our great) God (the manifestation of His excellence and power).

Our salvation through belief in Jesus gave us access to the power that overcomes this world order. Faith in the completed works of Jesus is key to opening the door for His supernatural abilities to work. We are to rejoice that the glory of God will manifest in our lives.