Father, keep them in Your name, the name which You have given Me, that they may be one even as We are. John 17:11
Isolate one area of division in your marriage, and look on today as a fresh opportunity to pray about it. Ask the Lord to reveal anything in your own heart that is threatening oneness with your spouse. Pray that He would do the same for them. And if appropriate, discuss this matter openly, seeking God for unity.