Exodus 26:4-6

CLV(i) 4 You will make loops of blue on the hem of the one sheet from the end of the joining, and so shall you make in the hem of the endmost sheet at the second joining. 5 Fifty loops shall you make in the one sheet, and fifty loops shall you make in the end of the sheet which shall be at the second joining, causing the loops to receive each to its fellow. 6 Then you will make fifty links of gold, and join the sheets, each to its fellow, by the links; and the tabernacle will come to be one.