On the subject of attracting a soul into a flesh vessel to be tasked with inhabiting it for a lifespan and the imposing of primitive 21st century genetic scripting upon it: It depends on how early in the process of fertilization and conception the new instruction set is forced upon the flesh vessel, and the power of the soul that is emerging through it.

Let us say jesus or another messiah is being born through you or your wife and you both possess extremely inferior genetics that would normally 100% result in a severely disabled child being born - it doesn't really matter to a soul powerful enough to be considered a messiah because it will exert its powers of electromagnetism and manipulate its atoms to force itself to be born with superior genetics appropriate for it to complete its messiah level mission.

A married couple both seek primitive 21st century genetic scripting. They're superficial, so they want to swap their brown eyes for blue or green. During their baby-edit interview the salesman upsells them into electing for a higher IQ baby - expensive, but a small price to pay for smarter offspring, right? But the caveman-like researchers believed increasing conceptualization complexity is as simple as increasing grey matter density, so they only increase the total neuron count, failing to account for the exponential intricacy and effect of neuron interconnection, so their child is born with nothing more than a slightly heavier brain, just as retarded as it ever would have been unedited, likely moreso.

You will be conned by 105 IQ salesmen into paying for your children to be a part of the 130 IQ first experimental iterations of it, while the 160 IQ versions remain locked away. God wants you to cure all of your diseases, and this technology is a grand step towards completing that mission, but you have to utilize it correctly for that to be done properly, and, unfortunately, even your best and brightest still seem too incompetent to account for the myriad.