How about this one? Woe unto you, scribes and Pharisees, hypocrites! for you tithe mint and anise and cummin, and have left undone the weightier matters of the law, justice, and mercy, and faith… (Matt 23:23). Usually that is quoted when people think that the little things don't matter, that as long as we have good hearts (the "big thing"), we can do as we please otherwise. But once again they are misusing the scripture. In the first place, that is not the whole the verse. Immediately after this, Jesus adds, but these you ought to have done and not left the other undone. Jesus does not excuse us from following God's Word to the minutest detail—"these you ought to have done"—he simply stresses the larger matters.
It is not that difficult to understand. What would you say are the larger things a good husband should do? Sexual faithfulness probably tops the list, especially since God makes that the one thing that can dissolve a marriage in His eyes (Matt 19:9). But most women would probably add things like a responsible, mature provider, a good father, and certainly not an abuser. All of those qualify as "the weightier matters", I think.
But are there any little things you might like in a husband as well? Remembering special days, especially anniversaries. Maybe even remembering your favorite color or favorite flower. You might find it especially endearing if he brings you a cup of coffee in bed every morning before he leaves for work, or brings home a hand-picked bouquet of wildflowers on an ordinary day, "out of the blue". Certainly these are all small things, things most people would consider nice but unnecessary to a good marriage. But what do those things say? They say I love you, I care enough to remember things that are special to you, I will go out of my way to do something sweet for you—I have picked burrs off the slacks he wore when wading through those wildflower fields, but I didn't mind one bit!
If that is how you feel about things that are small, what makes you think they mean any less to the God who created us and made us in His image? Don't quote only half of Jesus' statements, twist them to mean something he did not, take them out of context, or any other of a half a dozen ways people do injustice to his words, for Jesus also says, the little things do matter.
Therefore, whoever breaks one of the least of these commands and teaches people to do so will be called least in the kingdom of heaven… (Matt 5:19).