He called us to be his friends. When you were Baptised, you were brought into the family of God. Your human family and their friends were there to pray for you and to celebrate the great occasion. But, unless you were older than usual when you were baptised, you probably don't remember too much about it. Soon you will be confirmed.
Confirmation means two different things.
First of all, God confirms the choice he made long ago when he welcomed you into his family. Secondly, you have the chance to confirm the choice your parents and god-parents made, when they brought you for Baptism. It is something we can only do with God's help. The Holy Spirit is the power of God's love. The Spirit is given to us at confirmation.