Ezekiel 40:35-39

Then he brought me to the north gate; and he measured it according to those same measurements,

with its guardrooms, its side pillars, and its porches. And the gate had windows all around; the length was fifty cubits and the width twenty-five cubits.

And its side pillars were toward the outer courtyard; and palm tree decorations were on its side pillars, on each side, and its stairway had eight steps.

A chamber with its doorway was by the side pillars at the gates; there they rinse the burnt offering.

And in the porch of the gate were two tables on each side, on which to slaughter the burnt offering, the sin offering, and the guilt offering.