I very much like to recall what St. John Chrysostom, a Father of the Early Church, wrote when he presented the Apostles as authentic examples of true shepherds:

"The Apostles did not come down from the mountain like Moses with stone tablets in their hands. They emerged from the Cenacle carrying the Holy Spirit in their hearts and offering everywhere treasures of wisdom and of grace as spiritual gifts flowing from a gushing spring. They went preaching to the whole world, they themselves being the living law, as if they were books animated by the grace of the Holy Spirit."

We don't know the Holy Spirit, but we see its effect in our lives:

Without the Holy Spirit:

God is distant, Christ is in the past,

the Gospel is a dead letter,

the Church is a simple organization, authority is domination,

mission is propaganda,

worship is the summoning of spirits,

and Christian action the morality of slaves

the Risen Christ is here,

the Gospel is the power of life,

the Church means Trinitarian communion, authority is a liberating service,

mission is a Pentecost,

liturgy is memorial and anticipation, human behavior is deified.