Psalm 128:6

Yea, thou shalt see thy children’s children, and peace upon Israel.

Cross-reference

Psalm 125:5 Parallel

Psalm 125:5 ends with 'Peace be upon Israel!'—the exact same benediction closing this verse.

Genesis 50:23 shows Joseph seeing his grandchildren to the third generation—a fulfillment of the blessing to see one's children's children.

Job 42:16 Parallel

Job 42:16 recounts Job living long and seeing four generations of descendants—another example of the same blessing of seeing grandchildren.

In Proverbs 13:22, the righteous leave an inheritance for their grandchildren - directly echoing the blessing of seeing children's children.