The sons of Levi: Gershon, Kohath and Merari.

1 Chronicles 6:1-48
The sons of Levi: Gershon, Kohath and Merari. The sons of Kohath: 
Amram, Izhar, Hebron and Uzziel.
The children of Amram: Aaron, Moses and Miriam.
The sons of Aaron: Nadab, Abihu, Eleazar and Ithamar. 
Eleazar was the father of Phinehas, Phinehas the father of Abishua,

Jozadak was deported when the Lord sent Judah and Jerusalem into exile by the hand of Nebuchadnezzar.
These are the men David put in charge of the music in the house of the Lord after the ark came to rest there. They ministered with music before the tabernacle, the tent of meeting, until Solomon built the temple of the Lord in Jerusalem. They performed their duties according to the regulations laid down for them.
The line of the high priests; the families of Gershom, Kohath and Merari; families of the singers.
Why?
Each one in the family of Levi has its duty in the tabernacle. They are the priests of God and serve the Lord in Temple.
Levi does not work for themselves but other Israelies serve them the needed of their life.
This system is like the system of the church now, the elders or pastors and ministers received the living from brothers and sisters in the church.
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寫歷代誌作者是利未人，是負責聖殿的服事，所以對於利未人及服事的事情記載特別詳細。
神今天也給我們每個人不同的職份，使命。無論在什麼地方都要彰顯神的榮耀。
亞倫
記載非尼哈這個家族，所以特別記載直到約撒達，即聖殿的事奉。因為非尼哈對神熱心，神揀選這個家族。
獻祭是容易看的到的，但是人心看不到，藉著唱歌，可以看出人是否用心服事。愛、心靈和誠實來敬拜。向神表達情感，要作詞、作曲，如何表達，註釋、練習等。唱歌最能表達人對神敬拜的表達。獻牛羊也也表達人的內心。不能以此來評論獻祭、唱詩歌是否敬虔，兩個都重要。神看我們內心，不表示神不看外表。
內心會影響我們外表，外表也有可能影響內心。
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How?
The Tenth is the way now to serve God's servant.