Rashi

Woe, Ariel Jonathan renders: Altar of the Lord. Ezekiel, too, called it that, as it is said (43: 16): “And the altar (וְהָאֲרִיאֵל) twelve [cubits] in length,” [because of the heavenly fire that lay like a lion atop the altar, as we learned in Tractate Yoma (21b)]. Our Sages, however, explained it in reference to the heichal (the Temple proper), which was narrow from the rear and wide in the front. the city wherein David encamped The altar that was built in the city wherein David encamped [from Jonathan]. add year to year And always your sins are continuously increasing until your sacrifices are cut off (יִנְקֹפוּ), an expression similar to (supra 17:6): “like the cutting (כְּנֹקֶּף) of an olive tree.”