it is jewish tradition even to this day to quote a scripture and not to say Psalms 22:1-31
iow when a jew starts quoting the first line everyone knows what you are quoting and joins in
below is the entirety of Psalms 22:1-31 which profoundly matches exactly what was occurring at that moment Jesus was on the cross
if any sincere jew would have started quoting Psalms 22:1-31 at that moment Jesus started it they would have known beyond a doubt what Jesus was saying/doing - He was testifying at that very moment - not complaining - not forsaken or confused - He was quoting the salvation of God to people who knew he was pointing to their hope of Messiah and everlasting life - there are many messianic passages in the ot and this is one of them
look at the beauty of this prophetic scripture written 1000 years before Jesus was born
i highlighted it for easy understanding -
RED is what God was doing starting with Jesus' Divine conception (amazing) and ending with His resurrection and the gospel reaching the world (amazing)-
BLACK is exactly what the mockers were saying/doing to Jesus -
there is more in depth understanding of this - but to keep on topic this is the briefest answer possible
Psalm 22 New King James Version (NKJV)
The Suffering, Praise, and Posterity of the Messiah
To the Chief Musician. Set to [a]“The Deer of the Dawn.” A Psalm of David.
22 My God, My God, why have You forsaken Me?
Why are You so far from helping Me,
And from the words of My groaning?
2 O My God, I cry in the daytime, but You do not hear;
And in the night season, and am not silent.
3
But You are holy,
Enthroned in the praises of Israel.
4
Our fathers trusted in You;
They trusted, and You delivered them.
5
They cried to You, and were delivered;
They trusted in You, and were not ashamed.
6
But I am a worm, and no man;
A reproach of men, and despised by the people.
7
All those who see Me ridicule Me;
They [b]shoot out the lip, they shake the head, saying,
8 “
He [c]trusted in the Lord, let Him rescue Him;
Let Him deliver Him, since He delights in Him!”
9
But You are He who took Me out of the womb;
You made Me trust while on My mother’s breasts.
10
I was cast upon You from birth.
From My mother’s womb
You have been My God.
11 Be not far from Me,
For trouble
is near;
For
there is none to help.
12
Many bulls have surrounded Me;
Strong bulls of Bashan have encircled Me.
13
They [d]gape at Me with their mouths,
Like a raging and roaring lion.
14
I am poured out like water,
And all My bones are out of joint;
My heart is like wax;
It has melted [e]within Me.
15
My strength is dried up like a potsherd,
And My tongue clings to My jaws;
You have brought Me to the dust of death.
16
For dogs have surrounded Me;
The congregation of the wicked has enclosed Me.
They[f] pierced My hands and My feet;
17
I can count all My bones.
They look and stare at Me.
18
They divide My garments among them,
And for My clothing they cast lots.
19 But You, O Lord, do not be far from Me;
O My Strength, hasten to help Me!
20 Deliver Me from the sword,
My[
g] precious
life from the power of the dog.
21
Save Me from the lion’s mouth
And from the horns of the wild oxen!
You have answered Me.
22
I will declare Your name to My brethren;
In the midst of the assembly I will praise You.
23 You who fear the Lord, praise Him!
All you [
h]descendants of Jacob, glorify Him,
And fear Him, all you offspring of Israel!
24
For He has not despised nor abhorred the affliction of the afflicted;
Nor has He hidden His face from Him;
But when He cried to Him, He heard.
25
My praise shall be of You in the great assembly;
I will pay My vows before those who fear Him.
26
The poor shall eat and be satisfied;
Those who seek Him will praise the Lord.
Let your heart live forever!
27
All the ends of the world
Shall remember and turn to the Lord,
And all the families of the [i]nations
Shall worship before [j]You.
28
For the kingdom is the Lord’s,
And He rules over the nations.
29 All the prosperous of the earth
Shall eat and worship;
All those who go down to [
k]the dust
Shall bow before Him,
Even he who cannot keep himself alive.
30
A posterity shall serve Him.
It will be recounted of the Lord to the next generation,
31
They will come and declare His righteousness to a people who will be born,
That He has done this.
ARE THESE NOT THE MOST AMAZING WORDS EVER TO DESCRIBE SO ACCURATELY WHAT WOULD HAPPEN 1000 YEARS LATER TO JESUS AND THE REASON WHY?