Peter answered, “You are the Messiah, the Son of the living God.” Jesus replied, “Blessed are you, Simon son of Jonah, for this was not revealed to you by flesh and blood, but by my Father in heaven. And I tell you that you are Peter,and on this rock I will build my church, and the gates of Hades will not overcome it. I will give you the keys of the kingdom of heaven; whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.” Then he ordered his disciples not to tell anyone that he was the Messiah. -[Matthew 16:13-20](https://www.christianity.com/bible/bible.php?q=Matthew 16%3A13-20&ver=niv)
So what are they keys?
I can give you the Yogic interpretation. The rock referred to the body of Simon. And Jesus then called on Peter.
Etymology – at that time Peter means rock
He said on this rock, Simon / Peter he will build his church. Remember the 7 churches in revelations? They refer to the seven chakras. And Jesus said he will give him the keys. Which means the technique to open the chakras or churches which are the kingdom of Heaven
So why call the body a rock? When you realize the true consciousness- the body is no longer living ! It is like a rock / inert / dead. Saying this Jesus gave him a very high level of awakening of pure consciousness
Now there are few aspects to it. That’s why pleural was used. One of them is awakening of shakti. Then learning the technique to go within and thirdly it requires purity
Now next Jesus says whatever you Bind to earth and Loose to earth – this refers to a technique in meditation where when you go within if you gain control , you can gain control over maya / Satan