Genesis 23:1
And Sarah was an hundred and seven and twenty years old: these were the years of the life of Sarah.
Cross-reference
Genesis 17:17
Parallel
In Genesis 17:17, Abraham laughs that Sarah at 90 could bear a child — her death at 127 confirms she lived 37 years after Isaac's birth.
Genesis 25:1
Historical context
In Genesis 25:1, Abraham takes Keturah as wife — the narrative places this remarriage after Sarah's death here at 127.