1 King 7; 2 Chronicles 4

And the temple gets furnished.  Some of the worship implements are wild this day and age....The Sea, for example was for the priests' ceremonial washings...there were pots, shovels and sprinkling bowls...it was all about the sacrifices....

The Jewish people would be coming to the temple for festivals 3 times a year, so the temple had to accommodate huge amounts of people.