Prayer is communicating with God through talking and listening. There are different types of prayer including communal prayer said with others (like Mass) and private prayer said alone (like reading scripture). The four main purposes of prayer are petition, adoration, contrition, and thanksgiving. Catholics should know important prayers like the Lord's Prayer, Hail Mary, and Apostle's Creed. Prayer is an important part of the Bible as seen in passages like the Magnificat and Psalms.