Here are 2 Bible verses about genetic testing, curated from both the Old and New Testaments of the Holy Bible, King James Version, arranged from most to least relevant.
Psalm 127:3-5 KJV
3 Lo, children are an heritage of the Lord: and the fruit of the womb is his reward. 4 As arrows are in the hand of a mighty man; so are children of the youth. 5 Happy is the man that hath his quiver full of them: they shall not be ashamed, but they shall speak with the enemies in the gate.
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Psalm 3:1 KJV
1 Lord, how are they increased that trouble me! many are they that rise up against me.