What reasons does the Bible give for why the tribe of Levi was chosen to have the priesthood and temple duties?

What reasons does the Bible give for why the tribe of Levi was chosen to have the priesthood and temple duties? In Genesis 49:5-7 when Jacob was telling his children what will happen to them, he told Simeon and Levi that they were violent and that they would be scattered among the descendants of Jacob and they would be dispersed among Israel. Could this have been something like a prophecy and could this be the reason?