If Jacob believed that to be true, perhaps there is no unrighteousness on his part.
And Sarah laughed to herself, saying, “Now that I’ve lost the ability, am I to have enjoyment — with my husband so old?” Then יהוה said to Abraham, “Why did Sarah laugh, saying, ‘Shall I in truth bear a child, old as I am?’
Genesis 18:12-13 (The Contemporary Torah, JPS 2006)
The Midrash has this funny quip that says when Sarah secretly said that her husband is so old, God told Abraham that she said SHE is so old, in order to keep peace between them.
Being married for 22 years, I find this delightful.