"Behold, the Man whose name is the BRANCH! From His place He shall branch out, and He shall build the temple of the LORD."
This OT Messianic prophecy is fulfilled in our Lord Jesus Christ. The Son of God came from heaven, planted Himself in the fallen earth, and has spread out over all the globe (through the extension of His church).
Basically, that exact same pattern is the one for all true churchmen to follow: be grounded (by grace through faith) in Jesus, be faithful members of His body, and from there bear fruit (which is the expansion of His kingdom [church]).
[Puritan quote of the day: "Can Christ forget Himself? We are His fullness, as He is ours." --Richard Sibbes, in "The Bruised Reed"]
