The Pulpit Commentary - Ezekiel 47:4
At a second and a third distance of a thousand cubits the same process was repeated when the waters were found to be first waters to the knees , and secondly waters to (or, of) the loins. The unusual expression, מַיִם בִּרְכָּים , instead מֵי , as in the similar expressions before and after, may have been chosen, Keil suggests, in order to avoid resemblance to the phrase, מֵימֵי רַגְלַיִם in Isaiah 36:12 (Keri)—not a likely explanation. Havernick describes it simply... read more
The Pulpit Commentary - Ezekiel 47:3
Having emerged from the corner of the east outer gate in drops, the stream, which had not swollen in its passage across the outer court and under the temple wall, speedily exhibited a miraculous increase in depth, and therefore in volume. Having advanced eastward along the course of the stream an accurately measured distance of a thousand cubits (about one-third of a mile), the prophet's guide brought , or caused him to pass, through the waters , when he found that they were to the ankles... read more