The theological term translated Trinity, [454:4] was in use as early as the second century; for, about A.D. 180, it is employed by Theophilus, who is supposed to have been one of the predecessors of Paul of Samosata in the Church of Antioch. [454:5] Speaking of the formation of the heavenly bodies on the fourth day of creation, as described in the first chapter of Genesis, this writer observes—“The three days which preceded the luminaries are types of the Trinity, [454:6] of God, and His Word, and His Wisdom.” Here, as elsewhere in the works of the fathers of the early Church, the third person of the Godhead is named under the designation of Wisdom. [455:1] Though this is the first mention of the word Trinity to be found in any ecclesiastical document now extant, it is plain that the doctrine is of far higher antiquity. Justin Martyr repeatedly refers to it, and Athenagoras, who flourished in the reign of Marcus Aurelius, treats of it with much clearness. “We speak,” says he, “of the Father as God, and the Son as God, and the Holy Ghost, shewing at the same time their power in unity, and their distinction in order.” [455:2] “We who look upon this present life as worth little or nothing, and are conducted through it by the sole principle of knowing God and the Word proceeding from Him, of knowing what is the unity of the Son with the Father, what the Father communicates to the Son, what is the Spirit, what is the union of this number of Persons, the Spirit, the Son, and the Father, and in what way they who are united are divided—shall we not have credit given us for being worshippers of God?” [455:3]