The purpose of group worship is to gather together and praise God. If the purpose was for each one to talk to God personally, that could have been done from the comfort of their homes.
With the growing thirst for Spiritual Gifts among the church at Corinth, Paul points out the greatest gift that they all needed in their lives, something greater than any other gift and without which all other gifts are worthless.
Being a relatively new church, the Corinthians had lot of queries regarding their order of worship. One of the main concerns was the mystery that surrounded the spiritual gifts given to the members by the Spirit. They saw these gifts as a means to create a hierarchical order between themselves rather than using it for the purpose that God intended.
How do we start believing in Jesus Christ? Those who have had an encounter with Jesus can surely tell us about their start. But what about the born Christians and believers who do not have a special kind of encounter with Jesus Christ?