Charles H. Spurgeon on Psalms 78:63

The fire consumed their young men. As fire slew Nadab and Abihu literally, so the fire of divine wrath fell on the sons of Eli, who defiled the sanctuary of the Lord, and the like fire, in the form of war, consumed the flower of the people. And their maidens were not given to marriage. No nuptial hymn were sung, the bride lacked her bridegroom, the edge of the sword had cut the bands of their espousals, and left unmarried those who else had been extolled in hymns and congratulations. Thus Israel was brought very low, she could not find husbands for her maids, and therefore her state was not replenished; no young children clustered around parental knees. The nation had failed in its solemn task of instructing the young in the fear of Jehovah, and it was a fitting judgment that the very production of a posterity should be endangered.