Now this is what you shall do to them to consecrate them, that they may serve me as priests. Take one bull of the herd and two rams without blemish...
Exodus 29:1

The Hebrew word for "what" (translated "thing" in some versions) is dabar, which literally means "word". God said to Moses, "This is the word by which you will consecrate the priests." What is the word by which all of Israel is sanctified? Not what, but whom. This is an allusion to #yeshua. He is the Word. The Aaronic priests must be specially sanctified before taking office. But Yeshua was sanctified as High Priest of all Creation from before time. He IS sanctification.
#tetzaveh