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

As it is written in Isaiah the prophet, “Behold, I send my messenger before your face, who will prepare your way, the voice of one crying in the wilderness: ‘Prepare the way of the Lord, make his paths straight,’” John appeared, baptizing in the wilderness and proclaiming a baptism of repentance for the forgiveness of sins.
Mark 1:2‭-‬4, ESV

Just as John got people ready for the ministry of Jesus by teaching repentance, we should be getting people ready for the return of Christ.