26 For you see your calling, brethren, that not many wise according to the flesh, not many mighty, not many noble, are called. 27 But God has chosen the foolish things of the world to put to shame the wise, and God has chosen the weak things of the world to put to shame the things which are mighty; 28 and the base things of the world and the things which are despised God has chosen, and the things which are not, to bring to nothing the things that are, 29 that no flesh should glory in His presence. 30 But of Him you are in Christ Jesus, who became for us wisdom from God—and righteousness and sanctification and redemption— 31 that, as it is written, “He who glories, let him glory in the LORD.”

Simply put, God comes right out and says who he saved, and why he saved them, to Glorify himself. If people picked God, then this passage wouldn’t make a lick of sense.

What about Romans 9:

6 But it is not that the word of God has taken no effect. For they are not all Israel who are of Israel, 7 nor are they all children because they are the seed of Abraham; but, “In Isaac your seed shall be called.” 8 That is, those who are the children of the flesh, these are not the children of God; but the children of the promise are counted as the seed. 9 For this is the word of promise: “At this time I will come and Sarah shall have a son.” 10 And not only this, but when Rebecca also had conceived by one man, even by our father Isaac 11 (for the children not yet being born, nor having done any good or evil, that the purpose of God according to election might stand, not of works but of Him who calls), 12 it was said to her, “The older shall serve the younger.” 13 As it is written, “Jacob I have loved, but Esau I have hated.” Israel’s Rejection and God’s Justice 14 What shall we say then? Is there unrighteousness with God? Certainly not! 15 For He says to Moses, “I will have mercy on whomever I will have mercy, and I will have compassion on whomever I will have compassion.” 16 So then it is not of him who wills, nor of him who runs, but of God who shows mercy. 17 For the Scripture says to the Pharaoh, “For this very purpose I have raised you up, that I may show My power in you, and that My name may be declared in all the earth.” 18 Therefore He has mercy on whom He wills, and whom He wills He hardens. 19 You will say to me then, “Why does He still find fault? For who has resisted His will?” 20 But indeed, O man, who are you to reply against God? Will the thing formed say to him who formed it, “Why have you made me like this?” 21 Does not the potter have power over the clay, from the same lump to make one vessel for honor and another for dishonor?

In this passage, God plainly says that he elected people (even before they where born), then in verse 14 Paul defends God and says we have no bases to challenge him because he created us. Again, this passage doesn’t make a lick of sense if people picked God. Why would Paul defend God’s sovereignty here if we didn’t automatically think that it was unfair for God to pick Jacob before he was even born.

I could go on and on, since God demonstrates his Glory by saving people that can’t save themselves on every other page.

The point is that your book argues that God is not sovereign unto the point of saving people, only unto the point of making people savable. Not only is that false doctrine, but it limits Christ’s work on the cross and frankly takes some of God’s glory away. This is a really big deal, and I beg you to reconsider your position as you will be held accountable in the end. Limiting God’s work in salvation is an absolutely terrifying position to put yourself in.

schu