They - That constantly abide in thy house; the priests and Levites, or other devout Jews who were there perpetually, as Anna, Luk 2:36-37. They will - They are continually employed in that blessed work.
Baca - A dry valley in the way to Jerusalem, here put for all places of like nature. Make a well - They dig divers little pits or wells in it for their relief. The rain - God recompenses their diligence with his blessing, sending rain wherewith they may be filled.
A sun - To enlighten and quicken, and direct and comfort his people. Shield - To save his people from all their enemies. Grace - His favour, which is better than life. Glory - The honour which comes from God here, and eternal glory.
