Amos 6:5

5 They sing
The meaning of the Hebrew verb פָּרַט (parat), which occurs only here in the OT, is unclear. Some translate “strum,” “pluck,” or “improvise.”
to the tune of
Heb “upon the mouth of,” that is, “according to.”
stringed instruments;
The stringed instruments mentioned here are probably harps (cf. NIV, NRSV) or lutes (cf. NEB).

like David they invent
The meaning of the Hebrew phrase חָשְׁבוּ לָהֶם (khoshvu lahem) is uncertain. Various options include: (1) “they think their musical instruments are like David’s”; (2) “they consider themselves musicians like David”; (3) “they esteem musical instruments highly like David”; (4) “they improvise [new songs] for themselves [on] instruments like David”; (5) “they invent musical instruments like David.” However, the most commonly accepted interpretation is that given in the translation (see S. M. Paul, Amos [Hermeneia], 206–7).
musical instruments.
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