O Trinity, supreme in being;
O Unity without beginning,
the hosts of heaven sing your praise,
trembling before you.
Heaven and earth,
the heights and the depths,
are in awe of you,
Men and women bless you,
the fire, the wind, the light, all serve you,
all things created obey you in fear.
Source: Festal Menaion, Greek Orthodox Church
Modified (restored) from http://www.ministrymatters.com/all/entry/3915/devotion-for-trinity-sunday