This present age is ‘evil’
Grace to you and peace from God the Father and our Lord Jesus Christ, who gave Himself for our sins, that He might deliver us from this present evil age, according to the will of our God and Father.
But even if our gospel is veiled, it is veiled to those who are perishing, whose minds the god of this age has blinded, who do not believe, lest the light of the gospel of the glory of Christ, who is the image of God, should shine on them. (2 Corinthians 4:3-4)
In the beginning God created everything good, indeed very good (Genesis 1:31). After Adam disobeyed God an fell he forfeited to Satan his and all his descendent's right to rule the earth.
Satan still rules to day, although Christ has defeated him - the final outcome of this victory is still to be played out - See (Revelation 20:7-10). Satan thus is regarded as the ‘god of this age’. Until then, this present age will remain ‘evil’.