The whole of the first part of this verse is found at Ezekiel 40:4, where it is explained. The ordinances; the prescribed rules for persons and things in and about the temple; these ordinances are called laws in this verse. Mark well; set thy mind, that thou mayst comprehend them all. The entering in; not so much the gates and porches, through which the entrance is to the house, as the persons who may, and who may not, enter. The sanctuary, taken here largely for the holy courts, rather than for the house itself.
Related Commentaries of Ezekiel 44:5
Ezekiel 44:5
5 And the LORD said unto me, Son of man, mark well,a and behold with thine eyes, and hear with thine ears all that I say unto thee concerning all the ordinances of the house of the LORD, and all the laws thereof; and mark well the entering in of the house, with every going forth of the sanctuary.