3 David assembled all Israel in Jerusalem to bring up the ark of the LORD to the place he had prepared for it.

Read 1 Chronicles 15:3 Using Other Translations

And David gathered all Israel together to Jerusalem, to bring up the ark of the LORD unto his place, which he had prepared for it.
And David assembled all Israel at Jerusalem to bring up the ark of the LORD to its place, which he had prepared for it.
Then David summoned all Israel to Jerusalem to bring the Ark of the LORD to the place he had prepared for it.