Church councils are gatherings of Christian leaders called to address questions of faith and the life of their communities. Some were regional; others sought to bring together representatives of the whole Church. Their decisions helped clarify doctrines, the teachings Christians profess, especially concerning who God is and who Jesus Christ is.
These gatherings did not establish Jesus’ divinity or bring the gospel into existence. They sought to express the faith received from the apostles in the face of conflicting interpretations. For evangelicals, their value lies in faithfully explaining Scripture, which remains the supreme authority for evaluating any Christian teaching.
Jerusalem: the gospel crosses boundaries
Acts 15:1-29 describes a gathering of the apostles and elders, leaders responsible for caring for the Church, in Jerusalem. The question was crucial: did Gentiles, people from other nations who were not Jews, need to be circumcised and keep the law of Moses to be saved? Circumcision was the physical sign of God’s covenant with Abraham.
Peter recalled God’s work among the Gentiles and affirmed that salvation comes through the grace of the Lord Jesus. Paul and Barnabas described what God had done among other peoples, and James connected these events with Scripture. The decision did not require Gentiles to convert to Judaism, though it did provide guidance for their life together.
This gathering is commonly called the Council of Jerusalem and provides a biblical example of reaching decisions together. It involved debate, testimony, attention to God’s Word, and communication with the churches. Its apostolic authority, however, has a unique place: later councils belong to Church history and must be evaluated in the light of Scripture.
Nicaea and Constantinople: who is God?
In the fourth century, controversy grew around the teaching of Arius, who understood the Son to be a created being. The question touched the heart of the faith: is Jesus truly God, or is he part of creation? John 1:1-3 presents the Word, identified in the surrounding passage as Jesus, as God and as the one through whom all things were made.
In 325, Emperor Constantine convened the Council of Nicaea. The bishops, leaders charged with overseeing the churches, affirmed that the Son is of the same essence as the Father. This expression means that he fully shares the same divine nature and is neither a creature nor a lesser god.
Nicaea did not immediately put an end to the disputes. The Council of Constantinople, in 381, reaffirmed the faith of Nicaea and confessed the divinity of the Holy Spirit. These councils helped formulate the doctrine of the Trinity: there is one God, eternally existing in three persons, Father, Son, and Holy Spirit. They are neither three gods nor three names for a single person.
Ephesus and Chalcedon: who is Jesus?
Other debates focused on the relationship between Jesus’ divinity and humanity. The Council of Ephesus, in 431, affirmed the unity of his person. In this debate, the title given to Mary, Theotokos in Greek, traditionally translated as Mother of God, expressed that the one born of her is the divine Son made human. This did not mean that Mary had brought the divine nature into existence.
In 451, the Council of Chalcedon declared that Jesus Christ is one person in two natures, divine and human, without those natures being mixed or divided. In simple terms, he is fully God and fully human. The incarnation, the Son’s coming as a human being, did not turn his divinity into humanity or make his humanity a mere appearance.
This understanding helps us read together the passages that present the Son’s divine greatness and his real sharing in our human condition. Colossians 2:9 teaches that the fullness of deity dwells in him bodily. Hebrews 2:14-18 shows that he shared our humanity to help us and accomplish his work of salvation.
How Christians view the councils
Not all churches recognize the same councils or grant them the same authority. The early councils are often called ecumenical, a word that, in this historical context, refers to the intention to represent the whole Church. This does not mean that all Christians took part in them or accepted their decisions.
The controversies involved biblical interpretation, differences in language, disputes over leadership, and imperial influence. Some decisions were also accompanied by lasting divisions. Churches that did not accept Chalcedon still exist today; understanding their positions requires care, without reducing them to caricatures.
Catholics and Orthodox Christians recognize the doctrinal authority of these councils, although they differ in the councils they accept and the weight they give each one. Many evangelical churches embrace their central definitions concerning the Trinity and Christ because they consider them faithful to the Bible. This respect does not require treating every conciliar decision as infallible: Acts 17:11 provides an example of examining teaching in the light of Scripture.
A clear faith for reaching the nations
When bringing the gospel to another culture, the Church needs to explain who the God it proclaims is and who the Savior is in whom it invites people to trust. Matthew 28:19-20 connects the mission of making disciples of all nations with baptism in the name of the Father, the Son, and the Holy Spirit. Doctrinal clarity serves both teaching and worship.
Unreached peoples are ethnic groups whose local Christian community, if one exists, is still too small to bring the gospel to the entire group without outside help. Praying for them includes asking for understandable translations and well-prepared leaders. We can intercede for these leaders to explain the faith in local languages with biblical faithfulness and respect for their listeners. Knowing this history also teaches us to seek the truth with humility.
