Jesus said "No one can enter the Kingdom unless...". Let's have a look at the "Unless"

Matthew 5:17-20, 18:1-4, John 3:1-6

One of the keys of the Kingdom of Heaven is forgiveness. We forgive because we are forgiven.

Ezekiel 20:44, Exodus 25:10-22, John 20:21-23, Matthew 6:12, 14-15

The keys of the Kingdom of Heaven are for the transformation of our minds and the freedom of our souls.

Romans 12:1-2, Matthew 6: 22-23, Ephesians 5:13, Ezekiel 20:44, 1 Thessalonians 5:23

The keys of the Kingdom of Heaven that Jesus gave Peter are the keys to our salvation, freedom and maturity.

Matthew 16:13-19, John 21:18, Romans 12:1-2