Agreement speaks of your oneness, your unity. It is a position of power and of blessing.
You cannot face an issue let alone the outside world as a married couple if you are divided. You are united as one, use that power.
Discuss an issue first until you decide on an agreed position, then don’t deviate from that agreed position unless you have discussed and agreed on a deviation or a different position. Be loyal to each other by honoring that agreed position, even though you may come under pressure, perhaps from a family member, to change course from what you agreed with your husband.
If you have kids, you’ll soon learn that if you are not united, they will divide and conquer you! If they can do it, you’re a sitting duck for the rest of your world.
Psalm 133:1-3 NIV
 How good and pleasant it is when God’s people live together in unity! ………  For there the Lord bestows his blessing, even life forevermore.