Isaiah 65:23

Life will not be futile or frustrating, labor will amount to something, and children will be born for productive lives rather than for tragedy. This is true in one sense for the Christian now (cf. Romans 8:28; 1 Corinthians 15:58), but it will be true in a larger sense for all the redeemed in the future. Isaiah identified three generations of the blessed of the Lord in this glorious future state. This reflects the truth that the basic unit of society is the male and female couple, not the individual (cf. Genesis 2:18; Genesis 2:23-24).