So this week's Torah portion is Shemini (Leviticus 9:1-11:47).
In this portion we see the eighth day of the dedication of the mishkan, in which Aharon offers the required sacrifices, and blesses the people. Moshe and Aharon bless the people, and the glory of Yahweh appears to the entire people! Then Nadav and Avihu, the elder sons of Aharon, die before Yahweh, for bringing strange fire. Then the story gets more mysterious: Moshe gets angry with Aharon's younger sons for not eating the he-goat of the sin-offering, but Aharon speaks in their defense, and Moshe approves of what he says. After this we have the chapter about the laws of Kashrut. We learn about how Yahweh wants his chosen, sanctified people to eat. The reason we don't eat unclean foods?
Because, "I am Yahweh your God - you are to sanctify yourselves and you shall become holy, for I am holy; and you shall not contaminate yourselves through any teeming thing that creeps on the earth. For I am Yahweh Who elevates you from the land of Egypt to be a God to you; you shall be holy, for I am holy." Leviticus 11:44-45

He brought us out of Egypt and led us into to freedom! And in Messiah Yeshua we are free from the bonds of slavery to sin! And so we must be holy, because Yahweh has sanctified his people Israel from among the nations!
That's reason enough for me!