Zechariah 6:15
And they that are far off shall come and build in the temple of the LORD, and ye shall know that the LORD of hosts hath sent me unto you. And this shall come to pass, if ye will diligently obey the voice of the LORD your God.
And they that are afar off shall come,..... Into the temple; not the material temple; nor is this a prophecy which was fulfilled in Herod, a stranger, repairing that, as Kimchi suggests; but into the spiritual temple, the church; and is a prophecy of the calling of the Gentiles, who are said to be "afar off", Ephesians 2:12, from God; from having his image on them; from subjection to his law; from the knowledge and fear of him; and from communion with him: from Christ; from the knowledge of his person, righteousness, and salvation by him; from love to him, faith in him, and fellowship with him; from the Spirit of God, and from the people of God, and from any solid hope of eternal life: now these being called by grace, and brought to Christ under the drawings of the Father's love, shall come to his church, and join themselves to his people:
and build in the temple of the LORD; upon the foundation Christ; and be useful in building up others, either by private conversation, or by public preaching the word; it is not said, they shall "build the temple of the Lord"; that is Christ's work; but "build in" it:
and ye shall know that the LORD of hosts hath sent me unto you; that is, the Prophet Zechariah, who was sent to the Jews to declare these things to them; or, as the Targum adds, "to prophesy unto you": which they would fully know, and be assured of, when these things should have their accomplishment:
And this shall come to pass, if ye will diligently obey the voice of the LORD your God; not that the fulfilment of the above predictions depended upon their obedience; but when they should in the latter day obey the Gospel of Christ, or "the word of the Lord" their "God", as the Targum paraphrases it; then this would come to pass, that they should know that the prophet had his mission from the Lord.