Keys to the Kingdom are given you by believing FAITH.

Matthew 16:19 And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.

I will explain this in its total context and meaning

Matthew 16:
13 When Jesus came into the coasts of Caesarea Philippi, he asked his disciples, saying, Whom do men say that I the Son of man am?
14 And they said, Some say that thou art John the Baptist: some, Elias; and others, Jeremias, or one of the prophets.
15 He saith unto them, But whom say ye that I am?
16 And Simon Peter answered and said, Thou art the Christ, the Son of the living God.
17 And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven.
18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it.

Jesus speaks 18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; {Thou art the Christ, the Son of the living God and the gates of hell shall not prevail against it}.
If you believe Christ is the Son of the Living God. If this is your rock, If you truly believe you have the keys to the kingdom of God. Keys to the Kingdom in Matthew 16:19