Zechariah 4:6

Then he answered and spake unto me, saying, This is the word of the Lord unto Zerubbabel, saying, Not by might, that is, the force of armies, nor by power, namely, that of any earthly agency, but by My Spirit, saith the Lord of hosts. The candlestick of the Tabernacle was a type of the congregation of the Old Testament, which was supposed to be a light shining in the darkness of the world. Its oil was a type of the Holy Ghost, and the high priests of the Old Covenant received the strength for the performance of the duties of their office from the Spirit symbolized in the light of the great candlestick. Thus the candlestick of the vision was a type of the Church of God to be established anew in the midst of Judah. Moreover, Zerubbabel, the governor of the people, was to be informed that the great work which he was to perform could be carried on only through the Spirit of the Lord.