When Aaron and his sons were told how to bless the Israelites, they were given the specific blessing called “The Priestly Blessing”. The blessing goes as follows:
“The Lord bless three, and keep thee: The Lord make his face shine upon thee, and be gracious unto thee; The Lord lift up his countenance upon thee, and give thee peace.
And they shall put my name upon the children of Israel, and I will bless them.” –Numbers 6
At the beginning of Numbers 6, the Lord told Aaron and his sons that in order for the members to be able to obtain these blessings, they must follow specific guidelines such as refraining from fermented drinks and remain under the Nazirite vow.