Should prophesy

1. 1 Chr. 25: 1
     1 Moreover David and the captains of the host ^aseparated to the ^bservice of the sons of ^cAsaph, and of Heman, and of Jeduthun, who should prophesy with harps, with psalteries, and with cymbals: and the number of the workmen according to their service was:
2. Alma 9: 4
     4 And they said also: We will not believe thy words if thou shouldst prophesy that this great city should be destroyed in ^aone day.
3. Hel. 14: 9
     9 And behold, thus hath the Lord commanded me, by his angel, that I should come and tell this thing unto you; yea, he hath commanded that I should prophesy these things unto you; yea, he hath said unto me: Cry unto this people, repent and prepare the way of the Lord.