'Prepare' in the Bible

Behold, I send my messenger, and he shall prepare the way before me; and the Lord whom ye seek will suddenly come to his temple, and the Angel of the covenant, whom ye delight in: behold, he cometh, saith Jehovah of hosts.

And they shall be unto me a peculiar treasure, saith Jehovah of hosts, in the day that I prepare; and I will spare them as a man spareth his own son that serveth him.

And ye shall tread down the wicked; for they shall be ashes under the soles of your feet in the day that I prepare, saith Jehovah of hosts.