'Sidepost' in the Bible

Of the temple the side post is square, and of the front of the sanctuary, the appearance is as the appearance.

The prince shall enter by the porch (portico) of the gate from outside and stand by the post of the gate. The priests shall prepare and provide his burnt offering and his peace offerings, and he shall worship at the threshold of the gate and then go out; but the gate shall not be shut until evening.