Exodus 29:43

⁴¹And thou shalt offer the second lamb in the evening, after the manner of the morning offering, and according to the drink offering of the morning lamb; thou shalt offer it an offering to the Lord for a sweet-smelling savor,

⁴²a perpetual sacrifice throughout your generations, at the door of the tabernacle of witness before the Lord; wherein I will be known to thee from thence, so as to speak to thee.

— Exodus 29:43 —

⁴⁴And I will sanctify the tabernacle of testimony and the altar, and I will sanctify Aaron and his sons, to minister as priests to me.

⁴⁵And I will be called upon among the children of Israel, and will be their God.