I know that Jesus is really God. But I'm still confused... I don't get how God could die or be killed by people. Isn't God always there? How can God die?
Please explain this to me in an easy to understand way.
Sacred Tradition would say yes, the recently reworded Nicene creed says,
We also say it was in:
Death is the splitting of the body, but not splitting "The Godhead" from the body. So, no part of Christ ceases to be God upon death.
The Summa has some other pretty good points concerning this question, I'll summarize:
So, it's clear that He did it for a reason, but you're wondering if it is possible. Some say God can "square a circle" other's don't. Naive me says God can make a circle square, but "reply to objection 1" me has learned that God cannot deny himself. He cannot tell a lie and if he says He's going to send us His Son as a Redeemer who will die, then that's what's going to happen.
Furthermore, St. Thomas says:
Which leaves you hanging, and this is a central point of the Faith, which to wrap around with what I said about the Nicene Creed, is probably why it gets a mention. If Jesus didn't die, he couldn't have risen and if Christ didn't rise from the dead then:
In Christianity, as in Judaism, death isn't "the end". It does not mean to cease to exist. Perhaps the verse that makes this most clear is 2 Corinthians 5:8 (KJV)
In death, it is only the physical body that dies. The spirit/soul continues to exist. 1 Peter 3:18-20 even tells us where his spirit went when his body died.
Jesus' physical body died. His spirit went on. When we die, our spirit lives on. Therefore, we say He died, just as we all die.
We experience the same death as Christ, and are promised the same resurrection as Him as well.
God is eternal and inherently immortal. If we dismiss the incarnation in entirety, then we can also dismiss the idea of God being able to die. Therefore, it is because of the incarnation that God could (and did) die.
The apostle Paulos wrote (Phil. 2:5-8),
He also mentions that the princes of the world "crucified the Lord of glory" (1 Cor. 2:8), a title which seems to be an allusion to Ps. 24 in which YHVH is referred to as "the king of glory" (Ps. 24:8, 24:10).
Psalms 24 was understood by Justin Martyr as referring to the ascension of Jesus Christ into heaven.
In his Dialogue with Trypho, Ch. XXVI, Justin Martyr wrote,
All we know is that God the Son did die, because of the incarnation. We do not separate Jesus Christ into two persons, saying that his humanity died but not his divinity (Nestorianism). The divine person of Jesus died. The divine person of Jesus also resurrected himself. This is possible because the divine person subsists in two natures, humanity and deity.
If one wants to know how such things are possible, like the hypostatic union, there's no way for our minds to comprehend such things. They are beyond our comprehension.
From the beginning, God has declared the payment for sin is death, and so blood must be shed to cover sin:
Early in the Old Testament God introduced the idea of one innocent being shedding its blood in place of the sinner’s. After the incident in the garden, he introduced the sacrificial system in the Tabernacle-Temple ceremonies.
However the solution of sacrificing bulls and goats and lambs for the sins of each person’s sin was a temporary fix. The next year, another animal would have to be sacrificed for the same person. A more permanent solution was needed.
That meant a human was needed to die for humans’ sin. But all humans are sinful, so another sin-filled person dying for us just wouldn’t work. A human without sin was needed.
But ever since Adam, every human born is sin-filled, so how could a sinless man happen? The only way was if God did it Himself.
God became a man, known as Jesus—whose name, Joshua in Hebrew, means “the LORD saves” (1)—and died for us in our place. Therefore, anyone who accepts the sacrifice of Jesus on his or her behalf is covered by his blood and is saved.
What actually is the death and resurrection of body?
My answer is a question: What is death?
God created the universe, life, our spiritual existence, matter, time, and everything but himself. As others said, God revealed to the prophets and then through Jesus that he would die, must die, and did die. He required such a death as payment for sin, therefore it was incumbent upon him to arrange things so that the definition of death - what it means, how it occurs, and how it relates to the human form that he took on in the incarnation - was a logical, spiritual and material possibility. Not all possible definitions of life and death are necessarily compatible with such a plan and such a God. As the creator, God has a freedom that we do not.
Death is not the cessation of existence: Revelation 21:8 speaks of the second death, that of the unrighteous.