Over the years, a number of couples (mostly those contemplating to take the journey, but bothered by comments suggesting they’ve become spiritually wayward), have asked us how a SAHD-&-working-mom arrangement can possibly be biblical.
Timothy Keller’s sermon on Gender Roles from Minute 15-18 sums it up beautifully. I hope this helps you and encourages you to make the best decision for your family without guilt nor shame.