I always wondered what happens to the Gentiles of the Old Testament

I have studied the Old Testament. I always wondered what happens to the Gentiles of the Old Testament when the Jews were the "Chosen" People? People talk alot about what happens to the people in the the New Testament period when the Gentiles are finally are included. All the people have to do is to acknowledge the Holy Spirit and repent. God KNEW before each of us are born the one of us will acknowledge the Holy Spirit and the rest will not. Why the Law was given and why the priests have to have a tabernacle and sacrifices animals for sins. Why? Why? If God is God.... WHY? Psalm 74:1 [ A maskil of Asaph. ] Why have you rejected us forever, O God? Why does your anger smolder against the sheep of your pasture? Psalm 88:14 Why, O LORD, do you reject me and hide your face from me? SIN Why did Adam and Eve sinned? If God is control.. why God allowed Adam and Eve to sin? Why did God chose the Jewish people during the Old Testament time? Deuteronomy 7:6 For you are a people holy to the LORD your God. The LORD your God has chosen you out of all the peoples on the face of the earth to be his people. Why am I chosen and others are not? Acts 22:14 "Then he said: 'The God of our fathers has chosen you to know his will and to see the Righteous One and to hear words from his mouth. 1 Thessalonians 1:4 For we know, brothers loved by God, that he has chosen you. Romans 8:33 Who will bring any charge against those whom God has chosen? It is God who justifies. God says in Isaiah 55:9 "As the heavens are higher than the earth, so are my ways higher than your ways and my thoughts than your thoughts. God is God. His thoughts are higher than ours. We can all act like kids asking "WHY?" Book of Romans, a GREAT book of doctrines. Written by the Apostle PAUL. The actual theme is "Gospel of God". The Whole World is Guilty before God (1:1-3:20) Justification by Faith in Christ (3:21-5:21) Sanctification through Union with Christ in His Death & Resurrection (6:1-8:39) The Problem with Jewish Unbelief (9:1-11:36) Know one knows who are elected except God alone. Jesus reminded us that "False Christs and false prophets will appear and perform signs and miracles to deceive the elect—if that were possible." Mark 13:22 If God rules the universe by His sovereign decrees, how is it possible for a person to exercise free choice? If a person cannot exercise freedom of choice, how can a person be held responsible for his/her conduct? A.W. Tozer explains this best when he was thinking of two distinguished theologians, Jacobus Arminius and John Calvin on the topic of Doctrine of Salvation.

God sovereignly decreed that man should be free to exercise moral choice, and man from the beginning has fulfilled that decree by making his choice between good and evil. When he chooses to do evil, he does not thereby countervail the sovereign will of God but fulfills it, inasmuch as the eternal decree decided not which choice the man should make but that he should be free to make it. If in His absolute freedom God has willed to give man limited freedom, who is there to stay His hand or say, "What doest thou?" Man's will is free because God is sovereign. A God less than sovereign could not bestow moral freedom upon His creatures. He would be afraid to do so.

We can go on discussing Doctrine of Salvation. The bottom line is the following: "For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life." (John 3:16). John 10:9 "I am the gate; whoever enters through me will be saved. He will come in and go out, and find pasture." John 11:26 "and whoever lives and believes in me will never die." John 12:26 "Whoever serves me must follow me; and where I am, my servant also will be. My Father will honor the one who serves me." John 13:20 "I tell you the truth, whoever accepts anyone I send accepts me; and whoever accepts me accepts the one who sent me." John 14:21 "Whoever has my commands and obeys them, he is the one who loves me. He who loves me will be loved by my Father, and I too will love him and show myself to him." 1 John 2:6 "Whoever claims to live in him must walk as Jesus did." 1 John 4:6 "We are from God, and whoever knows God listens to us; but whoever is not from God does not listen to us. This is how we recognize the Spirit of truth and the spirit of falsehood. After reading many materials, I have found that God chose the following unqualified people. Here are the following God’s CHOSEN/CALLED unqualified people to serve Him. 1. Lot got drunk and committed incest. 2. Abraham doubted God and committed adultery. 3. Jacob deceived his father. 4. Moses murdered. 5. David murdered and committed adultery. 6. Jonah got angry with God (in a sinful way) 7. Paul (Saul) murdered Christians The knowledge of God how and why He choose one and not another is too much to know that ONLY God knows. People can debate all they want "this".. "that" Debating Arminianism vs Calvinistic doctrines... and so on... on.... Proverbs 16:33 The lot is cast into the lap, but its every decision is from the LORD. We are so entangled with "reasonings" regarding the doctrine of Salvation. You are either Spirit-Filled by acknowledging the conviction of Holy Spirit or don't acknowledge the Holy Spirit.