23:5a 4,000 are to be gatekeepers

And 4,000 men will keep the gates safe. (Easy English Bible)
-or-
{David also decided that} four thousand (4,000) ⌊Levites⌋ should be guards of the Temple gates,

23:5b and 4,000 are to praise the LORD

4,000 of them will use music to praise the Lord. (EEB)
-or-
and another four thousand (4,000) should praise Yahweh,

23:5c with the instruments I have made for giving praise.”

They will use the musical instruments that I have supplied for worship.”
-or-
with the musical instruments he/David had made.

23:5b–c (combined)

The remaining 4,000 of them will take the musical instruments I have provided for that purpose and praise Yahweh.

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