"There is no greater power on earth, than the agreement between a husband and wife."
I believe this to be true and I heard a pastor say it decades ago. I have done my best to live in unity with my husband. I have not been totally successful all the time, but have seen the favor of God crown our lives year after year. And believe unity has much to do with the favor and blessing being perpetually released from heaven into the life we enjoy as a couple.
Below is a beautiful song that describes the powerful anointing unity invokes from God.
A Song of [a]Ascents. Of David.
1 Behold, how good and how pleasant it is for brethren to dwell together in unity!
2 It is like the precious ointment poured on the head, that ran down on the beard, even the beard of Aaron [the first high priest], that came down upon the collar andskirts of his garments [consecrating the whole body].
3 It is like the dew of [lofty] Mount Hermon and the dew that comes on the hills of Zion; for there the Lord has commanded the blessing, even life forevermore [upon the high and the lowly]. AMP
I do believe this kind of unity is not restricted to just couples to enjoy. I believe it is a heart posture that can be found among two or more individuals with a common dream or cause desiring God to be in the center of all they do to live life and prosper under His covering, anointing and blessing. Let God be in the midst of your dreams and pursuits and keep the oil of blessing flowing to all involved!
What is the opposite of unity, but the "S" word; Strife.
James 3 KJV
13 Who is a wise man and endued with knowledge among you? let him shew out of a good conversation his works with meekness of wisdom.
14 But if ye have bitter envying and strife in your hearts, glory not, and lie not against the truth.
15 This wisdom descendeth not from above, but is earthly, sensual, devilish.
16 For where envying and strife is, there is confusion and every evil work.
17 But the wisdom that is from above is first pure, then peaceable, gentle, and easy to be intreated, full of mercy and good fruits, without partiality, and without hypocrisy.
18 And the fruit of righteousness is sown in peace of them that make peace.
I think we often forget some of the strongest warnings in the Bible. Here the scripture tells us that where strife is active, literally every evil work is present. Think of it this way, Unity releases blessing and favor into your life and relationships. Strife releases every evil work into your life and relationships. Choose for yourself, because you are the only one who can determine the heart posture of your life.