Jeremiah 52:21

And [concerning] the pillars, the height of one pillar [was] eighteen cubits,.... As in 1 Kings 7:15; said to be thirty five, 2 Chronicles 3:15; of the reconciliation of which,

2 Chronicles 3:15:

and a fillet of twelve cubits did compass it; a thread or line of that measure encompassed each of the pillars, 1 Kings 7:15;

and the thickness thereof [was] four fingers; either of the pillar, or the fillet about it; that is, the brass of it was four fingers thick:

[it was] hollow; that is, the pillar was hollow.