Charles Ellicott Commentary Ezekiel 47:3

"When the man went forth eastward with the line in his hand, he measured a thousand cubits, and he caused me to pass through the waters, waters that were to the ankles." — Ezekiel 47:3 (ASV)

Brought me through the waters—The point from which the measurement began is not distinctly mentioned, but is to be assumed as from their source, the threshold of the house. The prophet is brought through the waters to impress upon him a vivid sense of their size and depth, and this is repeated at each 1,000 cubits until the waters become impassable.