The first two verses are just some of many prophesies that were written about the Messiah. They expand several hundred years and were written by two very different people. The other three verses are written by people who witnessed these prophecies being fulfilled.
I gave My back to those who struck Me, And My cheeks to those who plucked out the beard; I did not hide My face from shame and spitting.
Isaiah 50:6 (NKJV)
Notice it says Jesus “gave” His back and cheeks and He “did not hide” His face! In Matthew 26:53 it says in He could have called down twelve legions ( 80,000) angels to save Him!
They gape at Me with their mouths, Like a raging and roaring lion. I am poured out like water, And all My bones are out of joint; My heart is like wax; It has melted within Me. My strength is dried up like a potsherd, And My tongue clings to My jaws; You have brought Me to the dust of death. For dogs have surrounded Me; The congregation of the wicked has enclosed Me. They pierced My hands and My feet; I can count all My bones. They look and stare at Me.
They divide My garments among them, And for My clothing they cast lots.
Psalm 22:13-18 (NKJV)
At the time this prophecy was written death by crucifixion was not even thought of!
For Christ did not enter into a holy place made with human hands, which was only a copy of the true one in heaven. He entered into heaven itself to appear now before God on our behalf. And he did not enter heaven to offer himself again and again, like the high priest here on earth who enters the Most Holy Place year after year with the blood of an animal. If that had been necessary, Christ would have had to die again and again, ever since the world began. But now, once for all time, he has appeared at the end of the age to remove sin by his own death as a sacrifice. And just as each person is destined to die once and after that comes judgment, so also Christ died once for all time as a sacrifice to take away the sins of many people. He will come again, not to deal with our sins, but to bring salvation to all who are eagerly waiting for him.
Hebrews 9:24-28 (NLT)
He was in the world, and the world was made through Him, and the world did not know Him. He came to His own, and His own did not receive Him.
But as many as received Him, to them He gave the right to become children of God, to those who believe in His name: who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God. And the Word became flesh and dwelt among us, and we beheld His glory, the glory as of the only begotten of the Father, full of grace and truth.
John 1:10-14 (NKJV)
And without controversy great is the mystery of godliness: God was manifested in the flesh, Justified in the Spirit, Seen by angels, Preached among the Gentiles, Believed on in the world, Received up in glory.
1 Timothy 3:16 (NKJV)