With Prayer 

The cycle of prayers assaulting Hades reaches a climax on the day of Pentecost. On the evening of that Sunday, the faithful gather for Vespers. During that service, they kneel for the first time since Pascha. And in that kneeling, the Church teaches them the boldness of prayer, the cry of human hearts for God’s solace and relief. Three lengthy prayers are offered, the third of which completes and fulfills the prayers that began so many weeks before in the Soul Saturdays:

Priest: … O Thou Who didst descend into Hades, and demolish the eternal bars, revealing an ascent to those who were in the lower abode; Who with the lure of divine wisdom didst entice the dragon, the head of subtle evil, and with Thy boundless power bound him in abysmal hell, in inextinguishable fire, and extreme darkness. … Who also, on this all-perfect and saving feast, dost deign to receive oblations and supplications for those bound in Hades, and grantest unto us the great hope that rest and comfort will be sent down from Thee to the departed from the grief that binds them. (edited for length)

Source: Father Stephen Freeman Glory to God for All Things — excerpted