"He realized that these men and women had the authority to use the Name of Jesus. These men and women in the Upper Room would be able to perform the same kind of miracles that Jesus had in His earth walk. He must have remembered when Jesus said, "All authority has been given unto me in Heaven and on earth."

1. The Cross was a mystery to Satan - 1 Corinthians 2:7-8.
2.Jesus became obediant to death - Philippians 2:8.
3.Satan conquered Jesus on the cross and took His spirit to the dark  regions of hell - Acts 2:31.
4.Jesus whom God had made to be sin, was justified in the Spirit and raised to a new life of God - 1 Timothy 3:16.
5.Jesus was born into a New Covenant in the pit of death and then conquered Satan - Colossians 2:15.​​

Satan had conquered Jesus on the Cross. He had stirred the selfish hearts of the High Priesthood until in a jealous frenzy they had crucified Him. The Father had laid on Him the sins of the world.
Jesus was left alone. God turned His back on Him. Satan triumphantly bore His Spirit to the Dark Regions of Hades. All the sufferings and torments that Hell could produce were heaped upon Jesus.

When He had suffered Hell's agonies for three days and three nights, the Supreme Court of the Universe cried, "Enough." He had paid the penalty and met the claims of justice. Satan saw Him Justified. God made Him alive in Spirit right there in the presence of the cohorts of Hades.
Jesus was made a New Creation.
Romans 8:29, "For whom he foreknew he also foreordained to be conformed to the image of his Son, that he might be the first born among many brethren."
Collossians 1:18, `For he is the head of the body, the church ; who is the beginning, the first born from the dead; that in all things he might have the preeminence."
Jesus was born into the New Covenant in Hades.
Colossians 2:15 describes it in part, Having put off from himself the principalities and the powers, he made a show of them openly, triumphing over them in it." (Marg.) Satan was defeated.
Hebrews 2:15, "And might deliver all them who through fear of death were all their lifetime subject to bondage."
Jesus paralyzed the death dealing authority of Satan. He took captivity captive. He defeated the Hosts of Hell, as our substitute. In the Upper Room Satan witnessed the results. He saw men and women recreated. He saw them receive Eternal Life.

He saw their sins remitted, blotted out as though they had never been.
He saw the power and energy of the Holy Spirit in men. He became aware of the fact that the New Creation people are his Masters.
He realized that these men and women had the authority to use the Name of Jesus. These men and women in the Upper Room would be able to perform the same kind of miracles that Jesus had in His earth walk. He must have remembered when Jesus said, "All authority has been given unto me in Heaven and on earth." Jesus was the Master of Hell, and these New Creation people had received this authority. He saw joy filled hearts, where tears had been their only drink. He saw the defeated become Masters.

He saw his slaves shaking off their manacles.
He saw homes that had been filled with misery turned into miniature Heavens.
He saw his prisoners set free. He saw men and women become New Creations. These New Creations became Jesus men and women. They counted the things that were not as though they were, and they leaped into being. And they counted the things that were, as though they were not, and they ceased being.
He saw faith grow, where doubt and fear had held the throne for years.
He saw a New Race of men, a New Species come into being. He saw the New Birth take place.
He saw God take men out of his grip and fill their hearts with love, where hatred had reigned supreme.

He saw selfishness curtailed. He saw Righteousness become a reality. The strangest phenomenon was to see men and women stand in the presence of God without the sense of guilt, inferiority, or condemnation.This shook the very foundation of Hell. A new language was spoken in the New Creation Family. A language permeated with love words.
He saw men reign as Kings in this New Realm of Life.
He saw this New Kind of Love gain mastery over men. Satan slew Jesus to annihilate Him, instead of that, His death and ressurection gave birth to this New Creation Family. They multiplied so rapidly that he realized he must destroy them before they destroyed him. I was asked, "Do you think Satan knew about all this before?" "Didn't he know what Christ was doing on the Cross?" "Didn't he know that if Christ went to Hell He would conquer him?"
Ephesians 3:9-10 Am. Rev.
"And to make all men see what is the dispensation of the mystery which for ages has been hid in God who created all things ; to the intent that now unto the principalities and the powers in the heavenly places might be made known through the church the manifold wisdom of God, -according to the eternal purpose which he purposed in Christ Jesus our Lord." Now notice this wonderful fact, the mighty plan of Redemption was sealed between the Father and Jesus to be revealed at an appointed time. Satan knew nothing of it. Satan now sees that he is defeated. Every time he destroyed a Christian it gave birth to another.
He feared God's Word on the lips of these New Creation men more than anything he had ever faced. He must destroy the Word. Where ever they were permitted to preach in that Name it gave birth to Jesus men and women.
During the seven hundred years known as the Dark Ages, Satan had smothered the Word. Luther gave birth to it again. In many Countries today, the Word has apparently been stamped out; however it still remains in the hearts of some men and women.
Satan saw that these Jesus men and women fed on the Word, and in doing so they became more and more like the Master. To destroy the Word then, would stop their increase. Now he knows his work. You can now see what our ministry is, we must give this living Word to men and women, nothing else can take its place. If Heaven ever had a Holiday it was when the miracle took place in the Upper Room. It was when the Father, Jesus and the Holy Spirit saw the first born child of the great Substitutionary Sacrifice of Christ. The angels must have looked on in perfect wonderment.
You and I can only see the external, but they could see the internal man Recreated in Christ Jesus.
They could see the thing that the Father had dreamed of throughout the ages, come to pass.
We do not know how He loved us.
He so loved us, when we were ruled by the Devil, that He sacrificed His Son to make it possible for us to receive Eternal Life. If the Church should ever catch a glimpse of how dear and beautiful they are to the Father, it would transform them. The angels themselves became their custodians. They walked with them, they cared for them, they protected them and shielded them from danger. I have wondered how Jesus looked upon the New Creations, and how He felt toward them. He had loved them in His earth walk, now they are New Creations ; they are Redeemed with His own blood. How priceless they must be to Him.
You remember how Paul put it, "He loved me and gave Himself up for me." I believe that if we knew how much the Master loved us, we would make that same confession.

E. W Kenyon
What Happened From The Cross To The Throne

What Satan Saw On The Day Of Pentecost
Download  pdf
Refrence Books 

.The Power of Praying in Tongues   by Glenn Arekion.
Tongues Beyond the Upper Room  by Kenneth E. Hagin.
Diversities of Tongues  by Curry Blake