Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me. If ye had known me, ye should have known my Father also: and from henceforth ye know him, and have seen him. Philip saith unto him, Lord, show us the Father, and it sufficeth us. Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Show us the Father? Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works. Believe me that I am in the Father, and the Father in me: or else believe me for the very works’ sake. ~ John 14:6-11

Jesus makes it a point of emphasis that he is in the Father and the Father is in him. Did this cease to be true while Jesus was on the cross? If God turned his back on Jesus, and Jesus became separated from the Father as some teach, we would have no other conclusion. However, Jesus never taught such things. If we consider the words of Jesus, there was never a moment of separation from the Father. In John 13, Jesus refers to his death and resurrection as the Father glorifying him and he being glorified in the Father.

Therefore, when he (Judas) was gone out, Jesus said, Now is the Son of man glorified, and God is glorified in him. If God be glorified in him, God shall also glorify him in himself, and shall straightway glorify him. ~ John 13:31-32

Now consider these words in view of what Jesus said in John 12. Speaking of his death and resurrection, Jesus says, Now is my soul troubled; and what shall I say? Father, save me from this hour: but for this cause came I unto this hour. Father, glorify thy name. Jesus’s prayer regarding the hour in which he would be betrayed, condemned, and crucified was that the Father glorify his name, to which the Father replied,  I have both glorified it, and will glorify it again. ~ See John 12:27-28

In John 8 Jesus said to the Jews, When ye have lifted up the Son of man, then shall ye know that I am he, and that I do nothing of myself; but as my Father hath taught me, I speak these things. ~ v. 28

In John 10 Jesus says again to the Jews, Therefore doth my Father love me, because I lay down my life, that I might take it again. No man taketh it from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again. This commandment have I received of my Father. ~ v.17-18

The cross was not the separation of Christ from God, but the greatest work of Christ expressing his oneness and union with the Father. Jesus repeatedly said, if you have seen me, you have seen the Father. Did this change when Jesus gave his life for us? No! There was no pause of the truth of Jesus’s oneness with the Father when he died on the cross. Jesus’s death (his laying down his life for us) was the greatest revelation of God’s love, mercy, and grace that humanity has ever seen.

One cannot declare that Jesus was separated from God in his death without also saying that Jesus (at that moment) was no longer in the Father, and the Father in him. In John’s gospel the hypostatic union of God and Christ is a point of emphasis from the beginning to the end. John begins his gospel by telling us

In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God… And the Word was made 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 bare witness of him, and cried, saying, This was he of whom I spake, He that cometh after me is preferred before me: for he was before me. And of his fulness have all we received, and grace for grace. For the law was given by Moses, but grace and truth came by Jesus Christ. No man hath seen God at any time, the only begotten Son, which is in the bosom of the Father, he hath declared him. ~ John 1:1-2; 14-18

This theme of the oneness of the Father and the Son is repeated over and over again in John’s gospel and never is there a break in this union. When Jesus was crucified, he was temporarily forsaken by his disciples who feared for their lives, but never was he forsaken by his Father. Shortly before Jesus was arrested, he said the following to his disciples:

Behold, the hour cometh, yea, is now come, that ye shall be scattered, every man to his own, and shall leave me alone: and yet I am not alone, because the Father is with me. ~ John 16:32

At no point did Jesus ever teach his disciples that he would be left alone and abandoned by God. As mentioned above, Jesus said to the Jews, when ye have lifted up the Son of man, then shall ye know that I am he, and that I do nothing of myself; but as my Father hath taught me, I speak these things.

Our Lord followed that statement by saying, And he that sent me is with me: the Father hath not left me alone; for I do always those things that please him.

When our understanding of the cross is formed by the whole counsel of scripture rather than random proof -texts, the volume of what Jesus was teaching and doing comes into focus. Things such as his washing his disciples feet suddenly make more sense. He did this just hours before he was to stand trial, and he tells his disciples the following:

Ye call me Master and Lord: and ye say well; for so I am. If I then, your Lord and Master, have washed your feet; ye also ought to wash one another’s feet. For I have given you an example, that ye should do as I have done to you. Verily, verily, I say unto you, The servant is not greater than his lord; neither he that is sent greater than he that sent him. If ye know these things, happy are ye if ye do them. I speak not of you all: I know whom I have chosen: but that the scripture may be fulfilled, He that eateth bread with me hath lifted up his heel against me. Now I tell you before it come, that, when it is come to pass, ye may believe that I am he. Verily, verily, I say unto you, He that receiveth whomsoever I send receiveth me; and he that receiveth me receiveth him that sent me. John 13:13-20 

When these words are considered in view of the moment in which they were spoken, we cannot but understand that Jesus was teaching his disciples what the cross was about. He was their Lord and Master, but he would lay down his life for them. The Master was the greatest servant of all! The love that Jesus would demonstrate in laying down his life would not only underscore who he was, but would be the lead example of how we, his followers, are to serve in his Kingdom.

This lesson must have really impacted Peter in particular. When Jesus began to wash Peter’s feet, Peter objected at first.

Then cometh he to Simon Peter: and Peter saith unto him, Lord, dost thou wash my feet? Jesus answered and said unto him, What I do thou knowest not now; but thou shalt know hereafter. Peter saith unto him, Thou shalt never wash my feet. Jesus answered him, If I wash thee not, thou hast no part with me. Simon Peter saith unto him, Lord, not my feet only, but also my hands and my head. Jesus saith to him, He that is washed needeth not save to wash his feet, but is clean every whit: and ye are clean, but not all. ~ John 13:6-10

Notice that Jesus tells Peter, What I do thou knowest not now; but thou shalt know hereafter. And when Jesus says to Peter If I wash thee not, thou hast no part with me, Peter’s response was not my feet only, but also my hands and my head. Peter wanted no part of missing out on Jesus, and it shows in his response, but Peter did not yet understand what his Lord was teaching him. I am certain that the lesson that Jesus taught his disciples that night is what shows up in Peter’s first epistle when he writes, For even hereunto were ye called: because Christ also suffered for us, leaving us an example, that ye should follow his steps: ~ 1 Peter 2:21

Jesus taught that we are to take up our cross and follow him, and as we do we follow in Christ footsteps. This is the lesson that Jesus was teaching his disciples. The cross does not lead into a place of abandonment, it leads to glory. God was in Christ reconciling the world to himself.