Exodus 28:41

28:41 “You are to clothe them – your brother Aaron and his sons with him – and anoint them and ordain them and set them apart as holy, so that they may minister as my priests.

Exodus 32:29

32:29 Moses said, “You have been consecrated today for the Lord, for each of you was against his son or against his brother, so he has given a blessing to you today.”

Leviticus 8:22-28

8:22 Then he presented the second ram, the ram of ordination, and Aaron and his sons laid their hands on the head of the ram 8:23 and he slaughtered it. Moses then took some of its blood and put it on Aaron’s right earlobe, on the thumb of his right hand, and on the big toe of his right foot. 8:24 Next he brought Aaron’s sons forward, and Moses put some of the blood on their right earlobes, on their right thumbs, and on the big toes of their right feet, and Moses splashed the rest of the blood against the altar’s sides.

8:25 Then he took the fat (the fatty tail, all the fat on the entrails, the protruding lobe of the liver, and the two kidneys and their fat) and the right thigh, 8:26 and from the basket of unleavened bread that was before the Lord he took one unleavened loaf, one loaf of bread mixed with olive oil, and one wafer, and placed them on the fat parts and on the right thigh. 8:27 He then put all of them on the palms of Aaron and his sons, who waved them as a wave offering before the Lord. 8:28 Moses then took them from their palms and offered them up in smoke on the altar on top of the burnt offering – they were an ordination offering for a soothing aroma; it was a gift to the Lord.

Hebrews 7:23-28

7:23 And the others who became priests were numerous, because death prevented them from continuing in office, 7:24 but he holds his priesthood permanently since he lives forever. 7:25 So he is able to save completely those who come to God through him, because he always lives to intercede for them. 7:26 For it is indeed fitting for us to have such a high priest: holy, innocent, undefiled, separate from sinners, and exalted above the heavens. 7:27 He has no need to do every day what those priests do, to offer sacrifices first for their own sins and then for the sins of the people, since he did this in offering himself once for all. 7:28 For the law appoints as high priests men subject to weakness, but the word of solemn affirmation that came after the law appoints a son made perfect forever.