House of Israel, Aaron, Levi --Psalm 135

Psalm 135:19,20 O house of Israel, bless the Lord; O house of Aaron, bless the Lord; O house of Levi, bless the Lord; You who revere the Lord, bless the Lord;

I don't know if this is correct, just my own guesses:
House of Israel speaks to me elders of the church, leaders, pastors; Aaron speaks the annointed ones with different giftings, like prophets, singers,etc; house of Levi speaks of people in different services, like ushers, carpark directors, cleaners...etc. You who revere the Lord is the congregation. But no matter what you're doing, no matter what callings you have toward your life, we will do it for the Lord, and for Him only.