1 Chronicles 12:33 Of Zebulun, there were 50,000 who went out in the army, who could draw up in battle formation with all kinds of weapons of war and helped David with an undivided heart.
Colossians 3:23-25 Whatever you do, work at it with all your heart, as working for the Lord, not for human masters, since you know that you will receive an inheritance from the Lord as a reward. It is the Lord Christ you are serving.
50,000 soldiers from the tribe of Zebulun served in David's army with UNDIVIDED (some translations: "not double-hearted") hearts. Can you imagine a skilled army with this level of loyalty and devotion?
An undivided heart is one of the most powerful things on earth. Singleness of purpose will flow from the life of a person whose heart is undivided. Couples whose hearts are devoted to the Lord this way will preserve their marriages, no matter how difficult their issues and problems become. Intercessors whose hearts are filled with a single purpose will ultimately demolish terrible strongholds. Missionaries with vision and absolute loyalty, will be able to take entire nations for Christ. One woman will pour out ointment worth a year's salary on her savior's head. An undivided heart is one of the most powerful things on earth.
Yeshua (Jesus) inspires and empowers undivided hearts. If you really know him well, you will be very much like the men of Zebulun were in their loyalty toward David.
Check your heart. Is it inspired by the beauty, heroism, and love of the Messiah? If not, you just don't know him well enough.