They might — That the beams of the chambers might have good and firm resting — hold. Had not hold — The ends of the beams were not thrust into the main body of the wall of the temple.
Related Commentaries of Ezekiel 41:6
Ezekiel 41:6
6 And the side chambers were three, one over another, and thirty in order; and they entered into the wall which was of the house for the side chambers round about, that they might have hold, but they had not hold in the wall of the house.