What Is Partitive Exegesis?

If we do not interpret Scriptures concerning Christ correctly—in light of the reality they describe—we end up with a God who thirsts, sleeps, suffers, submits, and lacks knowledge. We also end up with a man who is omnipotent, omnipresent, and eternal. If we fail to retain the properties of each nature to themselves, we blend them and start on the short road to heresy.
“You just had to be there!”
We fall back on this excuse when words fail to capture the precise reality of an experience—often a comedic interaction or visual beauty. The reality is that reality itself is often hard to describe. We do our best to describe it with words, but we’ve all experienced the frustration of falling short.
This is especially true when we use our words to describe God. Herman Bavinck asks, “The moment we dare to speak about God the question arises: How can we?”[1] The same question can be asked of the person of Christ: When we dare to speak about the One who is both infinite God and finite man, how can we?
Scripture tells us Jesus slept, ate, walked, and learned new things. But it also tells us He created the universe, sustains it, and is omniscient. You can see the dilemma—how do we accurately describe Jesus when He has these seemingly contradictory categories?
We can navigate this difficulty through a practice known as partitive exegesis. Partitive exegesis presupposes that Christ’s two natures are unified in His person without confusion, change, division, or separation. Therefore, we must recognize and maintain the distinction between Christ’s two natures when we read the Bible.[2] While that may sound complicated, this practice arises from Scripture itself—it is an inspired way of describing the reality of the incarnation.
A Biblical Pattern
As we read through the New Testament, we see passages variously emphasize attributes of both Christ’s humanity and His divinity. Consider these five ways that the Bible makes statements about Christ.
- When Jesus said, “Before Abraham was, I am,” the person is the subject, but the attribute (eternality) is only appropriate for the divine nature (John 8:58).
- When Jesus said, “I thirst,” the person is the subject, but thirst is only appropriate for the human nature (John 19:28).
- Titles like “Redeemer” or “King” are applied to Christ and is appropriate for both natures (Psalm 10:16; Luke 1:32–33).
So far, so good. But Scripture also contains more complicated statements about Christ.
- Some things are ascribed to Christ that are appropriate to the human nature but predicated on Christ as divine. In Revelation 1:17–18, Christ identifies Himself as “the first and the last” (a divine title), then He says He “was dead” (something only possible for a human). A human quality (death) is applied to the person even though the Son as God is emphasized in this passage.
- On the other hand, some things are ascribed to Christ that are appropriate to the divine nature but predicated on Christ as human. John 6:62 refers to “the Son of Man ascending to where He was before.” “Son of Man” emphasizes Christ’s humanity, but ascending to “where He was before” can only be truly said of Christ as divine.[3]
In each of these instances, Scripture applies a property true of one or both natures to the person. It is our job as interpreters to discern which attributes are appropriate for each nature.
While some people may object that we read too strong of a distinction between the natures, the Bible itself uses this logic as well. Romans 1:3 says that Christ “was born of a descendant of David according to the flesh.” Christ is not descended from David according to the divinity. This is logically obvious, but Paul makes it verbally explicit.[4]
Partitive exegesis is an attempt to apply this same inspired logic to every biblical statement about Christ. Some things are true of Christ according to His humanity and some things are true of Christ according to His divinity.
This way of thinking was worked out in the early church. As Chalcedon states, “The distinction of natures being by no means taken away by the union, but rather the property of each nature being preserved, and concurring in one Person.” Because the two natures are unified in the person of Christ, anything said of either nature is true of the person (“concurring in one Person”) while remaining untrue of the other nature (“the property of each nature being preserved”).
Yet, some confusion may arise in light of examples 4–5 above. How do we interpret those verses that apply the property of one nature to the other?
The Communication of Properties
The properties of both natures are predicated on the person. However, because both natures are united in the one person, Scripture seemingly attributes properties of one nature to the other. This biblical way of speaking has become known as the “communication of idioms” or “communication of properties.”
This is described in the 1689 London Baptist Confession, 8.7: “Christ, in the work of mediation, acts according to both natures, by each nature doing that which is proper to itself; yet by reason of the unity of the person, that which is proper to one nature is sometimes in Scripture, attributed to the person denominated by the other nature.”
Consider these verses:
- Acts 20:28, “Be on guard for yourselves and for all the flock, among which the Holy Spirit has made you overseers, to shepherd the church of God which He purchased with His own blood.”
- 1 Corinthians 2:8, “The wisdom which none of the rulers of this age has understood; for if they had understood it they would not have crucified the Lord of glory.”
- Zechariah 12:10, [Yahweh says] “I will pour out on the house of David and on the inhabitants of Jerusalem, the Spirit of grace and of supplication, so that they will look on Me whom they have pierced; and they will mourn for Him, as one mourns for an only son, and they will weep bitterly over Him like the bitter weeping over a firstborn.”
In each example, something human (blood, crucifixion, and death) is predicated of divinity (God, the Lord of Glory, and Yahweh). Does God, who is spirit (John 4:24) have blood? Can the Lord, who has life in Himself (John 5:26), be crucified? Can Yahweh be “pierced?”
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