Ephesians 1:9. “Having made known unto us the mystery of His will, according to His good pleasure which He hath purposed to Himself.”
The great mystery, revealed in Jesus Christ, is that the Gentiles should be partakers of Christ with the Jews, without circumcision and the other rites and ceremonies of the Mosaic law. Because of His death and resurrection, we have the incredible privilege of being a part of His body when we receive salvation through grace, by faith. When we confess our sin, seek His forgiveness, and accept His atoning death and resurrection as the substitute for our own payment for sin, then we have right standing with God.
The Church is the vehicle God chose to fulfill this grace to the Gentiles. Knowing that the Church was His purpose, we can understand Satan’s immediate and ongoing attempts to destroy the Church. He has twisted it up with heretical “doctrine;” he has persecuted it physically in every way imaginable; he has encouraged believers to fight and bicker endlessly with each other; he has used everything within his power, including music, arguments over dress and hair, and even different versions of the Bible, to create division and animosity so that the Church has lost its vision for what God intended, and has become something He never intended at all.
What Satan would like to forget is that Jesus said that He would build His church upon the Rock, referring to Himself, and that the gates of hell itself will not prevail against it. (Matthew 16:18. You can read more about this passage in Matthew here.)
The Church is the beloved Bride of Christ, for whom He gave Himself freely. Never think that the age of the Church is over, that we have found new and better ways to fulfill God’s purpose.
God is not swayed by our “wisdom.” We need to pay more attention to His wisdom.