Exodus 30:7

²⁸Didn’t I choose him out of all the tribes of Israel to be my priest, to go up to my altar, to burn incense, to wear an ephod before me? Didn’t I give to the house of your father all the offerings of the children of Israel made by fire?

⁹according to the custom of the priest’s office, his lot was to enter into the temple of the Lord and burn incense.

¹³The sons of Amram: Aaron and Moses; and Aaron was separated that he should sanctify the most holy things, he and his sons forever, to burn incense before the LORD, to minister to him, and to bless in his name forever.

²⁰“You shall command the children of Israel, that they bring to you pure olive oil beaten for the light, to cause a lamp to burn continually. ²¹In the Tent of Meeting, outside the veil which is before the covenant, Aaron and his sons shall keep it in order from evening to morning before the LORD: it shall be a statute forever throughout their generations on the behalf of the children of Israel.

⁴But we will continue steadfastly in prayer and in the ministry of the word.”

³and God’s lamp hadn’t yet gone out, and Samuel had laid down in the LORD’s temple where God’s ark was,

³⁴The LORD said to Moses, “Take to yourself sweet spices, gum resin, onycha, and galbanum: sweet spices with pure frankincense. There shall be an equal weight of each.