This scripture, at first glance, may not seem to apply to marriage, but please do give it some time and thought.
Show hospitality to one another without grumbling. 1 Peter 4:9 ESV
Hospitality is about receiving people in a way that makes them feel welcomed and well taken care of. And, though we tend to think about it in terms of guests, I think we can apply it to our spouses as well.
Take the day and talk to God about hospitality, what that means, and what that could look like in our homes. Give a bit of thought to grumbling as well. Our hospitality is supposed to be grumble-free.