Most Christians would answer this question with a resoundingΒ yes, but most grace believers would respond with an emphaticΒ no. They know that the people of Israel lived in aΒ kingdom (I Sam. 24:20), and they know that the Lord was born βKingΒ of the Jewsβ (Mt. 2:2) and will one day rule over them in the kingdom of heaven on earth. They rightly reason that a kingdom is ruled by a king, but that believersΒ todayΒ are members of βthe Body of Christβ (I Cor.Β 12:27), and a body is ruled byΒ a head.Β Since Christ is our Head (Eph.Β 4:15), it is easy to see why some say He is not our King.
But the same apostle who tells us we are members of Christβs Body also tells us that βthe Fatherβ¦hath translated usΒ into the kingdom of His dear SonβΒ (Col.Β 1:12,13). Paul is speaking here of GodβsΒ overallΒ kingdom of the saved of all ages, but any kingdom, by definition, is governed by a king.
There are, of course, some dispensational differences. A kingdom has to be governed byΒ law, so God gave Israel a law, a law that said that if your neighbor is hungry you should feed him (Deut. 15:8). But bodies arenβt governed by a law, they are governed byΒ love.Β When your stomach is hungry, your head doesnβt need a law to tell you to feed it. You feed it because βno man ever yet hated his own flesh;Β but nourisheth and cherisheth itβΒ (Eph.Β 5:29). In a kingdom, you have to have laws that say things like βthou shalt not kill,β and βthou shalt not steal,β so God gave the kingdom of Israel a law that said things like that. But our apostle says that laws like βthou shalt not killβ and βthou shalt not stealβ are βbriefly comprehended in thisβ¦Thou shalt love thy neighbor as thyselfβ¦βΒ (Rom. 13:9,10). So after telling the Galatians that we are not under the law but under grace, Paul told them, βbyΒ loveΒ serve one anotherβ (Gal.Β 5:13). Under grace, we donβt kill or steal from one anotherΒ because we love one another!Β But what would happen in the kingdom of Chicago if the mayor announced that he was suspending all laws, and from now on everyone should just love one another? It wouldnβt take long for people to realize that love works well when it comes to governing a body, but a kingdom needs laws!
But despite these dispensational differences, Christ is still the king of the overall kingdom of which we are a part. Someday He will βsit upon the throne of His gloryβ in the kingdom of heaven on earth (Mt. 25:31). In the meantime, does He sit on the throne of your heart? Why not choose to give βthe Kingβ the βhonour and gloryβ He deserves (I Tim.Β 1:17)Β by choosing to obey Him. source