and to do this "in innocency", or "purity", may signify the performance of them from a pure heart, a good conscience, and faith unfeigned; and particularly may have some respect to the lifting up of holy hands in prayer to God, previous to public worship; there seems to be an allusion to the priests washing their hands before they offered sacrifice, Ex 30:19;so will I compass thine altar, O Lord; frequent the house of God, where the altar was, and constantly attend the worship and ordinances of God; the work of the altar being put for the whole of divine service; the altar of burnt offering is here meant, which was a type of Christ; see Heb 13:10; reference is had to the priests at the altar, who used to go round it, when they laid the sacrifice on the altar, and bound it to the horns of it, at the four corners, and there sprinkled and poured out the blood; compare Ps 43:4; in order to which they washed their hands, as before; and in later times it was usual with the Heathens to wash their hands before divine service.
"----pura cum veste venito, et manibus puris sumite fontis aquam, nunc lavabo ut rem divinam faciam", Tibull. l. 2. eleg. 1. Plantus in Aullular. Act. 3. Sc. 6. Vide Homer. Odyss, 12. v.