For seven days the priests are to make atonement for the altar and cleanse it; so they shall consecrate it.
Christ is our altar, and these measurements show how His sacrifice sanctifies all our service. The benches where priests stood and handed offerings upward teach us a profound truth: in God's work we must assist one another, each dependent on the next, all moving toward the One who takes away sin.
AI summary
Commenting on Ezekiel 43:13-27
Seven days shall they purge the altar, and purify it,.... Which denotes the perfect purity and sanctification of it; which how to be applied to Christ; see Gill on Eze 43:20; and they shall consecrate themselves: the priests shall consecrate themselves, or devote themselves to the service of the altar; so Gospel ministers to the ministry of a crucified Christ: or they themselves should consecrate...
Seven days--referring to the original directions of Moses for seven days' purification services of the altar (Exo 29:37). consecrate themselves--literally, "fill their hands," namely, with offerings; referring to the mode of consecrating a priest (Exo 29:24, Exo 29:35).