Translation of "Ancianidad" in English

"Será el consuelo de tu alma y el apoyo de tu ancianidad, porque lo ha dado a luz tu nuera que tanto te quiere y que es para ti mejor que siete hijos."

And thou shouldst have one to comfort thy soul, and cherish thy old age. For he is born of thy daughter in law: who loveth thee: and is much better to thee, than if thou hadst seven sons.