Hopefully making theology simpler to understand! (2 Corinthians 1:12)

Since we have these promises, beloved, let us cleanse ourselves from every defilement of body and spirit, bringing holiness to completion in the fear of God.
2 Corinthians 7:1, ESV

We know that God is preparing the Bride of Christ, His Church, to be a holy temple, and that Christ will be returning soon.
Therefore, we should be preparing ourselves, as well, knowing He keeps His promises and works all things for His glory.