The ministry of prophesying, accompanied by harps, lyres and cymbals

1 Chronicles 25:1-31
David, together with the commanders of the army, set apart some of the sons of Asaph, Heman and Jeduthun for the ministry of prophesying, accompanied by harps, lyres and cymbals. Here is the list of the men who performed this service.
Asaph, Jeduthun and Heman were under the supervision of the king. 7 Along with their relatives—all of them trained and skilled in music for the Lord—they numbered 288. Young and old alike, teacher as well as student, cast lots for their duties. There was 24 team's order, each team has 12 members. 
Music, both instrument and vocal, was important in Jewish worship, as it was in social life generally. The Temple musicians were 'leaders in inspired prophecy', proclaiming God's message. 
Asaph, Heman and Jeduthun were amongst the famous: they are named in the Psalms. But status does not come into the Temple service. Teacher and pupil alike share an equal place. David, himself a skilled musician, must have taken special delight in this part of the arrangements, which he supervised personally.
Why?
The musician is important in worship in the Temple and to our daily life. David is a musician so he is skilled in music. 
All of the service in the Temple is arranged by taking the lot, so it is decided by the Lord. People have to serve it first, it is the most important job for them. 
Serving in the church, we should keep the same mind and attitude, do the best for the Lord.
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由祭司來帶領敬拜，設立詩班、樂隊。
以感謝和讚美為祭。詩班的服事類似祭司。神的話語有勸勉、安慰、應許、警告，同樣詩歌中有同樣的內容，影響力有時候超過祭司。
只有詩班是由大衛來指派，大衛特別重視詩歌的敬拜。音樂本身幫助我們進入敬拜當中，思想神的作為、屬性等。
如何訓練都是歸他們的父親來帶領。在家庭中的訓練，因此除了音樂以外，還有生活的榜樣、生命要對的，服事才會正確。生命的榜樣是最大的影響力。否則我們周遭的人會排斥我們。
在神面前沒有老師，學生、只有神的僕人或是信的和不信的。凡遵行神的話，就是耶穌的兄弟。
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How?
Worship the Lord with all my soul, all my heart and all my strength.