16. A number of the Psalms could not have been sung in public worship as they contained instructions forbidden in public worship.
The Lord laid down strict instructions as to what musical instruments were to be employed in public worship in the Temple. These instructions relate to four musical instruments, namely: the trumpet, harp, psaltery and cymbals.
The use of the trumpet was present from the very beginning of the Mosaic economy. The silver trumpets were to be blown at set times, cf. Numbers 10:2-.
