You renew the baptismal promises made by your Godparents for you at Baptism. You are, basically, 'confirming' those promises and your own desire to be a Catholic.
The vows which had been made at your Baptism.
baptism
"So you are saying that. I can renew this anytime?"
When you renew your baptismal commitment, it is often referred to as "reaffirmation of baptism." This typically involves publicly declaring your faith, commitment to live as a follower of Jesus Christ, and renouncing sin and evil. It may also involve participating in a formal ceremony or ritual.
The Baptism Pool holds the water that will be used for the Baptism.
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There is no such thing as a Jewish baptism.
There is no baptism in the Jewish religion. Only Christians have baptism.
The baptism at birth was instituted a few hundred years ago due to the high number of deaths of infants and new-borns. The idea was that this baptism would protect the child from going into Hell or Purgatory if they died. However, the church still demanded that Christians, when old enough to personally agree with their vows, be re-baptised, hence "Confirmation".
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