'Know' in the Bible

For behold, I will shake my hand upon them, and they shall become a spoil to those that served them: and ye shall know that Jehovah of hosts hath sent me.

And many nations shall join themselves to Jehovah in that day, and shall be unto me for a people; and I will dwell in the midst of thee, and thou shalt know that Jehovah of hosts hath sent me unto thee.

The hands of Zerubbabel have laid the foundation of this house; and his hands shall finish it: and thou shalt know that Jehovah of hosts hath sent me unto you.

And they that are far off shall come and build at the temple of Jehovah: and ye shall know that Jehovah of hosts hath sent me unto you. And this shall come to pass, if ye will diligently hearken to the voice of Jehovah your God.