Amphilochius of Iconium

Amphilochius of Iconium (ca. 339/340 – 394–403) was a significant Christian bishop and theologian of the fourth century, hailing from a distinguished Cappadocian family. He is venerated as a saint in both the Roman Catholic and Orthodox Churches, with feast days on November 22 and November 23, respectively.

Life and Historical Context

Born perhaps at Caesarea, Amphilochius was the son of an eminent lawyer and a wise mother. He may have been a cousin to Gregory of Nazianzus, and he was raised within the religiously charged environment of the Christian aristocracy in his native province. He initially studied law in Antioch with Libanius and practiced in Constantinople before withdrawing to lead a religious life, influenced by his friend and relative, Gregory of Nazianzus. He soon came under the influence of Basil of Caesarea and may have been a member of Basil's Christian 'City of the Poor.' By early 374, he was the bishop of the important see of Iconium, likely appointed by Basil, whom he continued to assist in Cappadocian ecclesiastical matters until Basil's death in 379.

Amphilochius maintained close relations with Gregory of Nazianzus and accompanied him to the Council of Constantinople in 381, where he was met by Jerome. His theological stance was firmly Nicene, and he was energetic in his opposition to various heresies.

Major Contributions and Thought

Amphilochius holds a prominent place in the history of theology for his defense of the divinity of the Holy Spirit against the Pneumatomachi, or Macedonians. Basil of Caesarea dedicated his work 'On the Holy Spirit' to him, and Amphilochius himself wrote a similar, though now lost, work that he read to Jerome.

His theological approach generally followed that of his Cappadocian peers. He defined the Trinity by the hypostatic properties of the Son as generation and the Spirit as procession. Notably, he innovated by designating the hypostases with the phrase 'mode of being' (τρόποι τῆς ὺπάρξεως), a term not used by the earlier Cappadocian Fathers, which represented a step towards understanding the Trinity in terms of relations rather than solely essence. This phrase gained general acceptance in theological discourse by the early fifth century.

In Christology, Amphilochius anticipated later theological usage with his terminology of 'hypostasis.' His insistence on Christ's human nature led him to conclude that Christ possessed two wills and two natures. He was also very active against the Messalians, contributing to the extirpation of that group.

Works and Legacy

Most of Amphilochius' writings have been lost. Among the surviving works are eight homilies, including the earliest known sermon on the Feast of the Purification of the Lord. His style and concern for historical accuracy have led some to consider him a predecessor to John Chrysostom, who may have been influenced by him. Other attributed works include an epistle to the council of Iconium (376) and the 'Epistola Synodica,' a letter against the Macedonian heresy, which is considered his only genuine extant work by some scholars. He also wrote a polemical treatise against the 'Encratites' and 'Apotactites' of rural Lycaonia, titled 'Against False Asceticism.'

Basil held Amphilochius in high regard, and later writers such as Theodoret described him favorably. Councils as late as 787 quoted him, and Jerome included him among Christian exemplars of secular erudition. According to Georges Florovsky, Amphilochius' theological writing, begun after he became a bishop, retains a certain simplicity, lacking a deep philosophical background, and is shaped by his pastoral needs in combating heresy. Florovsky praised his writing as inspired by sincere faith and his homiletic rhetoric as reminiscent of Gregory the Theologian.