Zechariah 4:6-7 So he answered and said to me: “This is the word of the Lord to Zerubbabel: ‘Not by might nor by power, but by My Spirit,’ says the Lord of hosts. ‘Who are you, O great mountain? Before Zerubbabel you shall become a plain! And he shall bring forth the capstone with shouts of “Grace, grace to it!” ’ ”
Zerubbabel was concerned that he will not be able to finish the work the Lord had called him to do. The obstacles before him seemed like a mountain that had to be moved. There were political enemies, threats of physical violence, and the people who were doing the work had their own concerns for family and safety. Then the angel of the LORD conveyed a message from the LORD to Zerubbabel. It is not by might or power, but by the Spirit of the LORD that things are accomplished.
The message went on to say that the mountain of obstacles would become level ground. He would bring out the final finishing stone while the people shout blessings on the finished Temple.
You probably can see a mountain that must be moved in your life and have asked many times how it can be removed. Man often intervenes with his power and might and ends up making a bigger mountain. It is not by might, nor by power, but by the Spirit of the LORD. Ask the LORD to do it by His Spirit. Act only at His leading.