6. The Divine Nature is within the Trinity.(Father, Son and Holy Spirit)
7. Since the Person of Jesus claims the attributes of Divinity(John 3:13,8:58,Matthew 9:2,12:8), then the Person of Jesus is a member of the Trinity.( John 14-16, Math 28:19)
Anything said of either of Christ's two natures applies to the one Person of Christ, so that is how it is said that Christ died on the cross. The term "hypostatic union" refers to the two natures united in the one Person, so anything said of those two natures in the one Person applies to the whole Person. So we see that the Person of Christ is ]both God and man.
The phrase hypostatic union was adopted by the general council at Chalcedon 451 AD. That council declared that the union of two natures is real (against Arius), not a mere indwelling of God in a man (against Nestorius), with a rational soul (against Apollinaris), and that in Christ’s Divine nature remains unchanged (against Eutyches).
We need to look to the Monothelite Controversy which had to deal with whether there was one or two wills/minds in the person of Christ. The outcome was that there were two; one human and one divine with the human subjected to the divine. The eternal Son of God did not assume a part of a human nature without a mind, without a will, without human activity, but He assumed all the things that were planted in our nature by God.
Now then, to act (or in this case, speak) is the work of a person, but the form or nature is the cause of this action; for each person acts in accord with the form or nature which it has. A difference in causes (natures) produces a difference in effects (actions). Therefore, where there are different natures, there are also different activities. So in the one Person of Christ there are two natural actions, the divine and the human, each of which has its own essential attributes, functions, and actions. Jesus was thirty years old according to His human nature (Luke 3:23); according to His divine nature He could say: "Before Abraham was born, I am" (John 8:58). The question is did both natures know this and communicate it to the Person. The answer is yes because the divine nature with its corresponding divine will willed the human nature to respond in such a fashion in keeping with Christ's office and ministry.
Chist is one person comprised of two natures and that these natures never co-mingle or mix. He most certainly acts as one person for as you and I said that what he is. But, some things according to one nature and others according to the other. Christ is fully aware of His deity just as He is His humanity. However, it has been taught that Christ does indeed have two distinct minds/will, one human and the other the divine will. The human will is at all times subjected to the divine will. At times the divine will remains quiescent so that Christ has a truly human development. "He grew in wisdom and stature ... " (Luke 2:52); "No one knows about that day or hour, not even the angels in heaven, nor the Son, but only the Father (Mark 13:32); "Father, if you are willing, take this cup from me; yet not my will, but yours be done" (Luke 22:42). These passages should make it clear that Jesus' human mind/will is distinct from the divine will which He nonetheless possesses in His divine nature. If Christ, who indeed is both God and man in one person, has a conjoined or co-mingled divine-human will, then either His divine will was diminished at times or His human will augmented or both. Christ would have had to be lying when He says He does not know the day or the hour and can read the orthodox position witht the "Monothelite Controversy" which covered this aspect of the person of Christ.
To act is the work of a person but the nature of a person is the cause of the action; for each person acts in accord with the nature that it has. A difference in causes (natures) produces a difference in effects (actions). Therefore, where there are different natures; i.e., human and divine, there are also different activities. So in the one person of Christ there are two natural activities driven by two natural wills, the divine and human. We say that the human will wills whatever the divine will wills it to will. The Monothelite Controversy and the Sixth General council of which the summary definition was that "Two natural wills and two natural activities are shown in our one Lord Christ."
hope this helps !!!