Ezekiel 40:18

18 which extended around the courtyard. This outer courtyard was at a lower level than the inner courtyard.

Ezekiel 40:18 Meaning and Commentary

Ezekiel 40:18

And the pavement by the sides of the gates over against the
length of the gates was the lower pavement.
] That is, this pavement, which went along by every gate, and answered the length of them, and what appertained to them, east, west, north, and south, was either lower than the pavement in the inward court, adjoining to this, to which there was an ascent by steps; or the middle part of this pavement rose up in a convex form, and on all sides there was a declivity; by which means all filth was washed away, and it was kept clean, and always fit to walk on. This distinction of a higher and lower pavement, whether on one account or another, may point out; the one, the believer's walk by faith on Christ; and the other, his walk in the ordinances of Christ, and in all becoming conversation.

Ezekiel 40:18 In-Context

16 There were small openings in the outside walls of all the rooms and also in the inner walls between the rooms. There were palm trees carved on the inner walls that faced the passageway.
17 The man took me through the gateway into the courtyard. There were thirty rooms built against the outer wall, and in front of them there was an area paved with stones,
18 which extended around the courtyard. This outer courtyard was at a lower level than the inner courtyard.
19 There was a gateway at a higher level that led to the inner courtyard. The man measured the distance between the two gateways, and it was 168 feet.
20 Then the man measured the gateway on the north side that led into the outer courtyard.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.