Jacob at Bethel, Moses before a burning bush, Isaiah in the temple, Jesus in the wilderness, Paul in a 'third heaven', John on an island.
Corporate worship is when private, solitary people come together.
God also meets us in community. Fellowship is caring for one another, sharing joys and sorrows. So in the early church absenteeism was considered to be spiritually disastrous. This time begins with 'passing the peace', or greeting one another, in an appropriate way.