Romans 16:25

25 Now to him who is able to establish you in accordance with my gospel, the message I proclaim about Jesus Christ, in keeping with the revelation of the mystery hidden for long ages past,

Read Romans 16:25 Using Other Translations

Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began,
Now to him who is able to strengthen you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery that was kept secret for long ages
Now all glory to God, who is able to make you strong, just as my Good News says. This message about Jesus Christ has revealed his plan for you Gentiles, a plan kept secret from the beginning of time.