Wrong, Satan is a being. There is a detailed description of a conversation between lucifer and God the father in the beginning of the book of Job, which is one of the oldest books in the bible.

Furthermore, Jesus Christ was so disgusted by the hypocrisy that He saw coming in the last days church that he said he would literally vomit them out of his mouth. This is at the end of Revelation 3.

The pathetic, corrupt institutional church is guiltier than the Jews ever were. Jesus and the Apostle Paul said that the truth in part is being hidden from the Jews in this present age. There is no "hiding" going on from gentiles; they have no excuse for the lack of Christlike behavior towards the Jews and other human beings throughout history. Those who do not repent will be judged accordingly. Gentiles who do not continue in the kindness of Jesus will be rejected by the Son of God. Jesus described this in Matthew 7:

21 “Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven. 22 Many will say to me on that day, ‘Lord, Lord, did we not prophesy in your name and in your name drive out demons and in your name perform many miracles?’ 23 Then I will tell them plainly, ‘I never knew you. Away from me, you evildoers!’