You aren't obligated to believe, but I'm obligated to tell you:

Repentance and turning to God are the only way to enter the Kingdom of Heaven.

Amen, if you agree.

God says:

 “God’s Mercy and Tolerance Are Not Rare—Man’s True Repentance Is

Regardless of how angry God had been with the Ninevites, as soon as they declared a fast and donned sackcloth and ashes, His heart began to soften and He began to change His mind. When He proclaimed to them that He would destroy their city—the moment prior to their confession and repentance for their sins—God was still angry with them. Once they had carried out a series of repentant acts, God’s anger for the people of Nineveh gradually transformed into mercy and tolerance for them. There is nothing contradictory about the coinciding revelation of these two aspects of God’s disposition in the same event. So, how should one understand and know this lack of contradiction? God expressed and revealed each of these two polar-opposite essences in turn as the people of Nineveh repented, allowing people to see the realness and the unoffendableness of God’s essence. God used His attitude to tell people the following: It is not that God does not tolerate people, or that He does not want to show mercy to them; rather, it is that they rarely truly repent to God, and it is rare that people truly turn away from their evil ways and abandon the violence in their hands. In other words, when God is angry with man, He hopes that man will be able to truly repent, and indeed He hopes to see man’s true repentance, in which case He will then liberally continue to bestow His mercy and tolerance upon man. This is to say that man’s evil conduct incurs God’s wrath, whereas God’s mercy and tolerance are bestowed upon those who listen to God and truly repent before Him, upon those who can turn away from their evil ways and abandon the violence in their hands. God’s attitude was very clearly revealed in His treatment of the Ninevites: God’s mercy and tolerance are not at all difficult to obtain, and what He requires is one’s true repentance. As long as people turn away from their evil ways and abandon the violence in their hands, God will change His heart and His attitude toward them.”