Seven days shall they make atonement for the altar and cleanse it, and so 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).