God can take what is broken or has broken and mend it back together. It requires humbling ourselves and admitting our part in what went wrong and asking for forgiveness. I believe this is true in all relationships not just a marriage relationship. It was the example that Christ gave us on the cross. He humbled Himself by coming down from His heavenly throne to become a man. An innocent and pure man without sin. He became sin and laid down, sacrificed His life, for us. He took on God's wrath and died in the most violent and horrible way-crucifixion. He was selfless. He paid a debt we could not pay-in order that we may have life everlasting!
Throughout Jesus' life on this earth, the gospels show a man of prayer who would find time alone to be with God no matter how early He had to rise in the morning or how late in the evening after the crowds finally departed. He sought God-His Father. He had a relationship with God that required quality time. He spent quality time with His disciples as well-teaching them the way in which they should go and what they would be called to do and go through after He had died.
That is what I see being lived out through the Duggars and their relationships. They pray, they spend quality time with God and with each other. They mentor, they teach, they forgive and they sacrifice. It is a blessing and encouragement to have these Godly examples and role models on television today.