Are you saying that God didn’t already know who all of His “bad children” were, so He had to retest them? That would imply that God is not “All-Knowing”. It also implies that He is incapable of discerning between good and bad spirits. Those are incredible insults to God.
That line is a reference to Judas, who was chosen by Jesus, but decided to follow his own evil heart rather than do what Jesus taught him. But for Judas, his choice was the cause of his own damnation because of the seriousness of his sin. He was an example to all of us that follow Jesus, that even though we are drawn toward God through Him, we can still lose our soul by being unfaithful to Him. “Many are called, but few are chosen.” Judas was chosen, but through his own free will he chose evil, instead of good. Which proves that even the chosen can fall away and lose their faith.
You skipped over some key passages that negate the concept of preexistence. You also seem to believe that we can choose what “kind of body we want”, which is only partially true.[33] Be not seduced: Evil communications corrupt good manners. [34] Awake, ye just, and sin not. For some have not the knowledge of God, I speak it to your shame. [35] But some man will say: How do the dead rise again? or with what manner of body shall they come?
[36] Senseless man, that which thou sowest is not quickened, except it die first. [37] And that which thou sowest, thou sowest not the body that shall be; but bare grain, as of wheat, or of some of the rest. [38] But God giveth it a body as he will: and to every seed its proper body. [39] All flesh is not the same flesh: but one is the flesh of men, another of beasts, another of birds, another of fishes. [40]** And there are bodies celestial, and bodies terrestrial: but, one is the glory of the celestial, and another of the terrestrial. **
In the resurrection, “celestial bodies” are those that are purely spiritual, like God and the angels. “Terrestrial bodies” are those of mankind, which will be transformed through the process of glorification, such as the Body of Jesus when He was Transfigured to show the Apostles what a glorified body will look like. The brightness (glory) of our resurrected bodies will reflect our personal degree of sanctity. Some of us will shine more brightly, and others less, depending on how dearly we loved, and followed the teachings of Jesus.
The bodies of the damned will also rise and be rejoined with their souls. But, their bodies will become hideous and ugly, according to the degree of their evil life, just as the fallen angel’s beautiful celestial bodies were twisted and distorted into hideous demons, according to their degree of evil. So, in a way, we do choose which kind of body we will have, by choosing between doing good or evil in our earthly life. Beyond the point of death, it’s too late to change our minds because our earthly life is over, and we’ll be judged by the choices we make, here and now.
[41] One is the glory of the sun, another the glory of the moon, and another the glory of the stars. For star differeth from star in glory. [42] So also is the resurrection of the dead. It is sown in corruption, it shall rise in incorruption. [43] It is sown in dishonour, it shall rise in glory. It is sown in weakness, it shall rise in power. [44] It is sown a natural body, it shall rise a spiritual body. If there be a natural body, there is also a spiritual body, as it is written: [45] The first man Adam was made into a living soul; the last Adam into a quickening spirit.
And below, in red, the most important line that you skipped because it totally negates preexistence:[46] Yet that was not first which is spiritual, but that which is natural; afterwards that which is spiritual. [47] The first man was of the earth, earthly: the second man, from heaven, heavenly. [48] Such as is the earthly, such also are the earthly: and such as is the heavenly, such also are they that are heavenly. [49]** Therefore as we have borne the image of the earthly, let us bear also the image of the heavenly**. [50] Now this I say, brethren, that flesh and blood cannot possess the kingdom of God: neither shall corruption possess incorruption.
[51] Behold, I tell you a mystery. We shall all indeed rise again: but we shall not all be changed. [52] In a moment, in the twinkling of an eye, at the last trumpet: for the trumpet shall sound, and the dead shall rise again incorruptible: and we shall be changed. [53] For this corruptible must put on incorruption; and this mortal must put on immortality. [54] And when this mortal hath put on immortality, then shall come to pass the saying that is written: Death is swallowed up in victory. [55] O death, where is thy victory? O death, where is thy sting?
[56] Now the sting of death is sin: and the power of sin is the law. [57] But thanks be to God, who hath given us the victory through our Lord Jesus Christ. [58] Therefore, my beloved brethren, be ye steadfast and unmoveable; always abounding in the work of the Lord, knowing that your labour is not in vain in the Lord.
, but if you are merely using a poem to illustrate what it is you believe in, that’s fine by me. Might interest you to know that Wordsworth was an Anglican, by the way.