Indeed, it is difficult to see Christ as separated from God, but we must take scripture at its word.
Heb 2:9-16 NASB 9 But we do see Him who was made for a little while lower than the angels, [namely,] Jesus, because of the suffering of death crowned with glory and honor, so that by the grace of God He might taste death for everyone. 10 For it was fitting for Him, for whom are all things, and through whom are all things, in bringing many sons to glory, to perfect the author of their salvation through sufferings. 11 For both He who sanctifies and those who are sanctified are all from one [Father;] for which reason He is not ashamed to call them brethren, 12 saying, "I WILL PROCLAIM YOUR NAME TO MY BRETHREN, IN THE MIDST OF THE CONGREGATION I WILL SING YOUR PRAISE." 13 And again, "I WILL PUT MY TRUST IN HIM." And again, "BEHOLD, I AND THE CHILDREN WHOM GOD HAS GIVEN ME." 14 Therefore, since the children share in flesh and blood, He Himself likewise also partook of the same, that through death He might render powerless him who had the power of death, that is, the devil, 15 and might free those who through fear of death were subject to slavery all their lives. 16 For assuredly He does not give help to angels, but He gives help to the descendant of Abraham.
Psa 16:5, 10-11 NASB 5 The LORD is the portion of my inheritance and my cup; You support my lot. ... 10 For You will not abandon my soul to Sheol; Nor will You allow Your Holy One to undergo decay. 11 You will make known to me the path of life; In Your presence is fullness of joy; In Your right hand there are pleasures forever.
Mat 27:46 NASB 46 About the ninth hour Jesus cried out with a loud voice, saying, "ELI, ELI, LAMA SABACHTHANI?" that is, "MY GOD, MY GOD, WHY HAVE YOU FORSAKEN ME?"
Psa 22:1-31 NASB 1 For the choir director; upon Aijeleth Hashshahar. A Psalm of David. My God, my God, why have You forsaken me? Far from my deliverance are the words of my groaning. 2 O my God, I cry by day, but You do not answer; And by night, but I have no rest. 3 Yet You are holy, O You who are enthroned upon the praises of Israel. 4 In You our fathers trusted; They trusted and You delivered them. 5 To You they cried out and were delivered; In You they trusted and were not disappointed. 6 But I am a worm and not a man, A reproach of men and despised by the people. 7 All who see me sneer at me; They separate with the lip, they wag the head, [saying,] 8 "Commit [yourself] to the LORD; let Him deliver him; Let Him rescue him, because He delights in him." 9 Yet You are He who brought me forth from the womb; You made me trust [when] upon my mother's breasts. 10 Upon You I was cast from birth; You have been my God from my mother's womb. 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 open wide their mouth at me, As a ravening and a roaring lion. 14 I am poured out like water, And all my bones are out of joint; My heart is like wax; It is melted within me. 15 My strength is dried up like a potsherd, And my tongue cleaves to my jaws; And You lay me in the dust of death. 16 For dogs have surrounded me; A band of evildoers has encompassed me; They pierced my hands and my feet. 17 I can count all my bones. They look, they stare at me; 18 They divide my garments among them, And for my clothing they cast lots. 19 But You, O LORD, be not far off; O You my help, hasten to my assistance. 20 Deliver my soul from the sword, My only [life] from the power of the dog. 21 Save me from the lion's mouth; From the horns of the wild oxen You answer me. 22 I will tell of 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 descendants of Jacob, glorify Him, And stand in awe of Him, all you descendants 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 for help, He heard. 25 From You [comes] my praise in the great assembly; I shall pay my vows before those who fear Him. 26 The afflicted will eat and be satisfied; Those who seek Him will praise the LORD. Let your heart live forever! 27 All the ends of the earth will remember and turn to the LORD, And all the families of the nations will worship before You. 28 For the kingdom is the LORD'S And He rules over the nations. 29 All the prosperous of the earth will eat and worship, All those who go down to the dust will bow before Him, Even he who cannot keep his soul alive. 30 Posterity will serve Him; It will be told of the Lord to the [coming] generation. 31 They will come and will declare His righteousness To a people who will be born, that He has performed [it.]
Psalm 22 is the cry of Jesus on the cross... separated from His Father... asking for salvation. But Jesus had a promise that God would not leave his soul in Sheol, and that he would inherit again the righteousness he gave up.
Gal 3:13-14, 18-19 NASB 13 Christ redeemed us from the curse of the Law, having become a curse for us--for it is written, "CURSED IS EVERYONE WHO HANGS ON A TREE"-- 14 in order that in Christ Jesus the blessing of Abraham might come to the Gentiles, so that we would receive the promise of the Spirit through faith. ... 16 Now the promises were spoken to Abraham and to his seed. He does not say, "And to seeds," as [referring] to many, but [rather] to one, "And to your seed," that is, Christ. ...18 For if the inheritance is based on law, it is no longer based on a promise; but God has granted it to Abraham by means of a promise. 19 Why the Law then? It was added because of transgressions, having been ordained through angels by the agency of a mediator, until the seed would come to whom the promise had been made.
Deu 21:23 NASB 23 his corpse shall not hang all night on the tree, but you shall surely bury him on the same day (for he who is hanged is accursed of God), so that you do not defile your land which the LORD your God gives you as an inheritance.
Gal 3:19 begs the question - why would God have to promise salvation to Jesus? Because Jesus became a curse and gave up His righteousness, allowing himself to be killed on a cross, and allowing the Father to raise him from the dead through the Abrahamic covenant of righteousness by faith... proving the covenant was valid and in effect.
2Co 5:21 NASB 21 He made Him who knew no sin [to be] sin on our behalf, so that we might become the righteousness of God in Him.
The fact that Jesus subjected himself to the same process of salvation that we go through is amazing. He was raised from the dead by Abraham's covenant of faith. The promise of the inheritance of righteousness (life) through kinship with Abraham by faith. What an incredible testimony to the effectiveness of salvation by faith in the gospel.
Heb 13:20 NASB 20 Now the God of peace, who brought up from the dead the great Shepherd of the sheep through the blood of the eternal covenant, [even] Jesus our Lord,