Married couples are often asked: "Are you praying together?" "Are you having sex frequently enough?" "Are you going on date nights?"
I don't have a problem with any of these; it's just that what is often most lacking in such lists is one of the most crucial elements of all: mission.
Other more commonly mentioned items certainly serve short-term intimacy, but mission is what helps couples stay together and grow together for the long haul.
A Kingdom-Focused Couple
Consider Jesus' words in the heart of the Sermon on the Mount: "Seek first the kingdom of God and His righteousness, and all these things will be added to you as well" (Matt. 6:33). If our call from Christ is to "seek first the Kingdom of God" (Matthew 6:33), how can a successful God-honoring marriage not be marked by mission?