King James Bible Dictionary

Lauder; praising, a Levite of the family of Merari, and one of the three masters of music appointed by David (1 Chronicles 16:41, 42; 25:1-6). He is called in 2 Chronicles 35:15 "the king's seer." His descendants are mentioned as singers and players on instruments (Nehemiah 11:17). He was probably the same as Ethan (1 Chronicles 15:17, 19). In the superscriptions to Psalms 39, 62, and 77, the words "upon Jeduthun" probably denote a musical instrument; or they may denote the style or tune invented or introduced by Jeduthun, or that the psalm was to be sung by his choir.

his law; giving praise

A musician of the temple
1 Chronicles 16:41; 1 Chronicles 25:1

Called Ethan
1 Chronicles 6:44; 1 Chronicles 15:17; 1 Chronicles 25:1

Referenced in titles of Psalm 39.1-13, Psalm 62.1-12, Psalm 77
Psalms 39:1; Psalms 62:1; Psalms 77:1

(praising), a Levite of the family of Merari, is probably the same as Ethan. Comp. (1 Chronicles 15:17,19) with 1 Chronicles 16:41,42; 25:1,3,6; 2 Chronicles 35:15 His office was generally to preside over the music of the temple service, Jeduthun's name stands at the head of the 39th, 62d and 77th Psalms, indicating probably that they were to be sung by his choir. (B.C. 1014.)