In his discourse, Leontius the Presbyter of Constantinople reflects on the mid-Pentecost celebration, highlighting its spiritual significance as a time of joy for believers. He contrasts this with the Old Testament celebrations, emphasizing that Christians celebrate not merely physical liberation but spiritual salvation through Christ. Leontius discusses the healing of the man born blind, illustrating Christ's divine authority and the ignorance of the Jewish leaders. He further recounts Peter's imprisonment by Herod and his miraculous release, underscoring the power of God over earthly authorities and the ongoing struggle between faith and opposition.