Danny Delgado of Uncommon Marriage writes about what is believed to be the single most important thing that could divorce-proof marriage, and it reads:
The single most important thing a couple can do to practically divorce-proof their marriage is to pray with each other on a daily basis. Studies have shown couples who do this have a divorce rate of less than 0.1%! Praying together not only brings unity with God but also unity with each other. The place of agreement is the place of power but unfortunately far too many husbands and wives never tap into the strength and protection praying together affords.
A warrior would never wait until they were in the middle of the battle before putting on their armor. A soldier would never wait until they were in the midst of a fight before they would load their weapon. A defender would never wait for war to come upon their home and family before they prepared and trained for it. If we neglect to pray with our spouses daily we are leaving the city gates open, our doors unlocked, and the watchman is asleep.
The enemy of your soul is the enemy of your marriage and would much rather take on sleeping saints than ones who are ready, alert, and prepared to stand.
“Put on the whole armor of God, that you may be able to stand against the wiles of the devil. For we do not wrestle against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this age, against spiritual hosts of wickedness in the heavenly places. Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand” (Ephesians 6:11-13).
Source: Uncommon Marriage
