I think that to answer your question, it is important to understand the meaning behind the word Sacrifice.[[MORE]]
"In ancient days, sacrifice meant to make something or someone holy." (The Guide to the Scriptures, "Sacrifice")
Jesus Christ, as the Son of God, was perfect in more ways than one. He had power over both Physical and Spiritual death.
- Physical meaning that he had power over death. That he did not have to die. As the Son of God he could live forever, and none could take His life unless he gave it away.
- Spiritual meaning that Sin had no power over Him. In other words, although he was tempted even by Satan, the devil himself, he chose to be obedient to His Father, and to keep the commandments he had been given.
Sacrifice is also understood to be (a)the offering of food, objects or life to (b)a higher purpose.
So how was Christ’s death a Sacrifice? We’ll address both parts of the definition of Sacrifice.
(a) The offering of life
As stated before, Christ had Power over death. He chose to go ahead with the Plan. He suffered, He bled, and died for us. The Son of God. The one without Sin. He physically offered himself up as a sacrifice.
I also like to think of a different kind of sacrifice He made for us that we don’t often think about. As he knelt on the Garden of Gethsemane, he asked His Father if there was no other way, and then sacrificed His will (of not going through the pain) for His Father’s.
(b) A higher purpose
Why did Christ do it? Because despite all the pain he went through - and the scriptures describe that pain as something too painful for us to even conceive - he understood that that was the only way that we could too rise again, be forgiven of all our sins and mistakes, and be admitted back into the presence of the Father. It was ALL for us. Because He loved us.
Is that not a sacrifice? I would say it is. I am so grateful for my Saviour and Redeemer. That He decided to suffer and die for each one of us. I know that through his Atonement we can return to live with our loving Heavenly Father. We just need to do our part, and make His sacrifice worth it in our lives.