Apolytikion for Pentecost - Trinity Sunday
Blessed are You, O Christ our God, who made fishermen all-wise, sending upon them the Holy Spirit and, through them, netting the world. O Loving One, glory to You. -Translation by Narthex Press

Apolytikion of the Church
The world has found in you a great champion in time of peril, as you emerged the victor in routing the barbarians. For as you brought to naught the boasts of Lyaios, imparting courage to Nestor in the stadium, in like manner, holy one, great Martyr Demetrios, invoke Christ God for us, that He may grant us His great mercy.

Kontakion
When the Most High came down and confounded tongues of men (Babel), He divided the Nations. When He dispensed the Tongues of Fire, He called all to unity, and with one voice we glorify the Most Holy Spirit. - Translation by Narthex Press