'Ages' in the Bible

Now to Him who is able to establish you according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery which has been kept secret for long ages past,

but we speak God’s wisdom in a mystery, the hidden wisdom which God predestined before the ages to our glory;

Now these things happened to them as an example, and they were written for our instruction, upon whom the ends of the ages have come.

so that in the ages to come He might show the surpassing riches of His grace in kindness toward us in Christ Jesus.

and to bring to light what is the administration of the mystery which for ages has been hidden in God who created all things;

that is, the mystery which has been hidden from the past ages and generations, but has now been manifested to His saints,

in the hope of eternal life, which God, who cannot lie, promised long ages ago,

Otherwise, He would have needed to suffer often since the foundation of the world; but now once at the consummation of the ages He has been manifested to put away sin by the sacrifice of Himself.