Trinity, The Holy.--A name applied to the Godhead and signifying Three in One and One in Three--the Father, the Son, and the Holy Ghost--a doctrine which is held by all branches of the Catholic Church, and by the greater number of the various Christian denominations. The word "Trinity" is not found in the Bible and is said to have been first used by Theophilus, Bishop of Antioch, in the second century as a concise expression of the Christian Faith concerning the Godhead, that "there is but one living and true God, everlasting, without body, parts or passions; of infinite power, wisdom and goodness; the Maker and Preserver of all things both visible and {260} invisible. And in the unity of this Godhead there be three Persons, of one substance, power and eternity: the Father, the Son, and the Holy Ghost." (Art. I). The doctrine of the Trinity deals with matter beyond reason but not contrary to reason; is the subject of Revelation and as such is proposed to our faith faculty. For this reason it is called a Mystery of the Gospel. Trinity Season, The.--The long period between Trinity Sunday and the First Sunday in Advent is so called. Its length is dependent on the time Easter is kept and may include as many as twenty-seven Sundays. The devotions and the Scriptural Lessons are intended to bring before us the moralities of the Gospel and the practical duties of the Christian life. Or as Bishop Coxe has finely expressed it, "The first half of the year is devoted to Doctrine primarily, and to Duty as seen in direct relation to Doctrine. So, the second half is devoted to Duty primarily, and to Doctrine only as reduced to practical Piety, Thus is the Christian Year divided between the Creed and the Decalogue." The Last Sunday of the Season is observed as the "Sunday next before Advent," but is popularly called "Stir up Sunday" from the first two words of the Collect for the Day. The Church color for the Trinity Season is green.