One of the key arguments functional subordinationists use to support their view that there is an eternal hierarchy in the Trinity is the predominant use of the names ‘Father’ and ‘Son’ for two persons of the Trinity.
It is true that the names ‘Father’ and ‘Son’ are the ones used most frequently in the Bible and in Christian liturgy. It is also true that Jesus obeyed his heavenly Father perfectly in the incarnation.
So on one level, it may seem intuitive that the hierarchical relationship between human fathers and their sons (especially in their youth) applies to the eternal Trinitarian relationships. However, if you scratch the surface of this assumption it doesn’t hold up. Here are just a few reasons why:
1. There is no indication that the term ‘Father’ replaces the name God revealed to Moses in Exodus 3:14, “I am who I am” (or, “I will be what I will be”). In fact, God commands that, “This is my name forever, the name you shall call me from generation to generation” (Exod. 3:15).
2. Though God does not claim the term ‘Father’ as a name in the Old Testament, according to the messianic prophecy in Isaiah 9:6: “For to us a child is born…and he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.” Therefore ‘Father’ also refers in some sense to Christ.
3. According to Philippians 2:9, Christ will be exalted to the highest place and given the name above every name. If this exaltation is understood hierarchically, it seems to contradict the hierarchy that functional subordinationists read into the names ‘Father’ and ‘Son.’
4. Though Jesus frequently refers to himself as the Son of God in the Gospels (esp. John), the name most often used for Jesus by his first followers, including the disciples and Paul, is ‘Lord.’ (The name ‘Lord’ is also used to refer to ‘I am who I am’ in the Greek translation of the Hebrew Scriptures that the disciples used.)
Paul attributes a special significance to using the term ‘Lord’ for Jesus. For example, those who “confess with your lips that Jesus is Lord” will be saved (Rom. 10:9), and “no one can say ‘Jesus is Lord’ except by the Holy Spirit” (1 Cor. 12:3). Functional subordinationists’ insistence that ‘Son’ entails inherent eternal subordination seems to undermine this confession of Jesus’ Lordship.
5. Jesus’ use of the term ‘Son’ often invoked his likeness with the Father rather than his subordination to the Father. Here’s an example:
So, because Jesus was doing these things on the Sabbath, the Jewish leaders began to persecute him. In his defense Jesus said to them, “My Father is always at his work to this very day, and I too am working.” For this reason they tried all the more to kill him; not only was he breaking the Sabbath, but he was even calling God his own Father, making himself equal with God. (John 5:18)
The Son was not persecuted for claiming to be subordinate to the Father. He was persecuted because he claimed to be equal to the Father.
6. The Son’s family resemblance to the Father is also understood as the fullest revelation of God. For example, Jesus tells his disciples, “Whoever has seen me has seen the Father” (John 14:9). In Heb. 1:3, the Son is called “the exact representation of God’s being.”
This emphasis on likeness is also supported by John’s reflections on what it means for believers to be children of God: “See what love the Father has given us, that we should be called children of God.…it does not yet appear what we shall be, but we know that when he appears we shall be like him…” (1 John 3:1–2). Here the emphasis is not on the child of God’s subordination to God the Father, but rather on the child’s eschatological likeness to the Father.
7. Inheritance is another key biblical concept that accompanies the terms ‘Father’ and ‘Son,’ as in Heb. 1:2, where the Son is described as the “heir of all things.” Paul compares and contrasts the status of a son who is the recipient of the father’s estate with the subordinate status of a slave and applies this to believers who are adopted into the family of God, “So in Christ Jesus you are all children of God through faith.…So you are no longer slaves, but God’s children; and since you are his children, he has made you also heirs” (Gal. 3:26, 4:7). Paul also contrasts sonship and slavery in his description of life in the Spirit:
For those who are led by the Spirit of God are the children of God. The Spirit you received does not make you slaves…rather, the Spirit you received brought about your adoption to sonship. And by him we cry, “Abba, Father.…” Now if we are children, then we are heirs—heirs of God and co-heirs with Christ, if indeed we share in his sufferings in order that we may also share in his glory. (Rom. 8:14–17)
Rather than reinforcing the permanent subordination of some groups of people, our adoption in Christ and life in the Spirit frees all believers to live out of our inheritance as children of God.
8. The Bible uses a vast diversity of terms to refer to the Triune God. Though God is like a father, God is also like a mother eagle (Deut. 32:11-12) and a rock (Isa. 17:10). Though Jesus is called the Son, he is also called the Word (John 1) and Wisdom (Luke 11:49; 1 Cor. 1:24). The shear variety of biblical terms used for God guards against any of them becoming too closely associated with God in his essence.
Since functional subordinationists rely on the terms ‘Father’ and ‘Son’ to support their view of inherent, eternal hierarchical Trinitarian relations (which is used to justify their view of permanent hierarchical human relations), their doctrine of God requires these particular terms rather than other biblical terms for God. The second commandment forbids us from substituting any images of God for the essence of God.
Conclusion
The functional subordinationist claim that the terms ‘Father’ and ‘Son’ are evidence of inherent, eternal hierarchical relations within the Trinity neglects the way these terms are used in the Bible to convey important truths that form the foundation for Christ’s divinity, including Jesus’ claim to equality with the Father (see 5 above), Jesus’ revelation of the Father (see 6 above), and Jesus as heir to the Father’s kingdom (see 7 above).
The functional subordinationist dependence on these particular terms to make their case for an inherent, eternal hierarchy within the Trinity also neglects other key biblical terms that refer to members of the Trinity such as the everlasting name God revealed to Moses (see 1 above), the messianic prophecy that Christ shall be known as ‘Everlasting Father’ (see 2 above), the name above all names that is given to Christ (see 3 above), the confession of Jesus as Lord (see 4 above), and the sheer variety of other biblical terms used for God (see 8 above).
Though functional subordinationists claim that the terms ‘Father’ and ‘Son’ would be ad hoc unless they refer to inherent, eternal hierarchical relationships within the Trinity, the burden of proof is on them to show that 1) the examples of biblical meanings listed above are somehow incorrect or insufficient, and that 2) their understanding of inherent, eternal functional hierarchy is somehow consistent with biblical meanings for ‘Father’ and ‘Son’ that have been upheld throughout church history, as well as other biblical terms for persons of the Trinity.