1 Kings 7:23-24

Now he made the Sea (basin) of cast metal, ten cubits from brim to brim, circular in form, five cubits high and thirty cubits in circumference. [Ex 30:17-21; 2 Chr 4:6] Under its brim were gourds encircling it ten to a cubit, completely surrounding the Sea; the gourds were in two rows, cast in one piece with it.