For this reason a man will leave his father and mother and be united to his wife, and they will become one flesh. Genesis 2:24
My husband parents are in their late 80's. They have been married for 66 years. They are amazing to watch. Yes, they can argue like no body's business, but there is love, and respect, and perseverance there. They've worked hard their whole lives, working the Iowa farm as a tenant family, and raising two sons.
Mary (hubby's mom) now walks on a walker. Rheumatoid arthritis has twisted her joints, and she's had several back and foot surgeries. Diabetes compounds the healing issue. Joe (hubby's dad) has had several strokes. He has no dexterity in his fingers and shuffles his feet when he walks.
My husband visited them in conjunction with his high school reunion last week. He noted that it requires both of them to do household jobs. His mom is the hands...she buttons her husband's shirts, and does anything that requires dexterity. His dad is the feet. He does most of the cooking, since he can stand unassisted, and has full arm movement even without the finger movement. I suspect neither could live alone, without the other. But together, they complete one another making it possible. They are truly two becoming one.
They are independent minded, and continue to live unassisted. The time may come, sooner than any of us would like, that they do need some outside help. But for now, they work in tandem, a beautiful picture of marriage as God intended it. Two working as one for the same goal.
And as Paul said, all parts of the body of Christ.
Matthew 19:4-6 -- "Haven't you read," he replied, "that at the beginning the Creator 'made them male and female,'and said, 'For this reason a man will leave his father and mother and be united to his wife, and the two will become one flesh'? So they are no longer two, but one. Therefore what God has joined together, let man not separate."
Romans 12:4,5 -- Just as each of us has one body with many members, and these members do not all have the same function, so in Christ we who are many form one body, and each member belongs to all the others.
1 Corinthians 7:4 -- The wife's body does not belong to her alone but also to her husband. In the same way, the husband's body does not belong to him alone but also to his wife.