The preacher talked about St Pauls well-known passage about living as one body, and not as a collection of random individuals. Here, whether in Church or Society, giving and receiving in a group leads to more contented and happy people than in trying all the time to look after oneself.  All people need a group to belong to, and sometimes belonging can be more significant for a person than believing.   In Christian Tradition, there has always been a sense of coming, working, and sharing together for the purpose of the Common Good.    This was spoken about by a preacher, Chrysostom, in the early Church, and then again by Aquinas in the thirteenth century.

Childhood, adolescence, and adulthood are the stages of ordinary human development.
This also happens in spiritual and religious development.  There is the wonder of childhood, followed by the questioning of adolescence, followed by combination of wonder and questioning in adulthood.  Some people seem to move easily through all three stages, and become happily content with the mixture of wonder and questioning.  Such people almost have some of the characteristics of what is called the spiritual mystic.   But others often opt out of the questioning stage, and become either stuck on a sort of fundamentalism, or else give up altogether. These people often cannot cope with the nature of uncertainty.
Natural Science progresses through the combination of Wonder and Uncertainty,and Questioning.  This is also true of Sacramental Worship in the Christian Tradition.   Holy Communion or Eucharist gives a sense of awe and wonder, but in a context of delighted questioning, in which truth is gradually discovered.  This is not just a personal search, but, more importantly, is a group activity, in the same way as is scientific research and discovery.