Ezekiel 46:2-3

2The prince is to enter from the outside through the portico of the gateway and stand by the gatepost, while the priests sacrifice his burnt offerings and peace offerings. He is to bow in worship at the threshold of the gate and then depart, but the gate must not be shut until evening. 3On the Sabbaths and New Moons the people of the land are also to bow in worship before the LORD at the entrance to that gateway.