Cross reference
Exodus 28:37
37 Put a blue cord on it and put it on the front of the twisted head-dress:
Exodus 28:4
4 This is what they are to make: a priest's bag, an ephod, and a robe, and a coat of coloured needlework, a head-dress, and a linen band; they are to make holy robes for Aaron your brother and for his sons, so that they may do the work of priests for me.
Exodus 28:28
28 So that the rings on the bag may be fixed to the rings of the ephod by a blue cord and on to the band of the ephod, so that the bag may not come loose from the ephod.
Exodus 28:31
31 The robe which goes with the ephod is to be made all of blue;
Exodus 29:6
6 And let the head-dress be placed on his head and the holy crown on the head-dress.
Exodus 39:30-31
30 The plate for the holy crown was made of the best gold, and on it were cut these words, HOLY TO THE LORD.
31 It was fixed to the head-dress by a blue cord, as the Lord had given orders to Moses.
Leviticus 8:9
9 And on his head he put the head-dress, and in front of the head-dress the plate of gold, the holy crown, as the Lord gave orders to Moses.
Numbers 15:38
38 Say to the children of Israel that through all their generations they are to put on the edges of their robes an ornament of twisted threads, and in every ornament a blue cord;
Zechariah 3:5
5 And let them put a clean head-dress on his head. So they put a clean head-dress on his head, clothing him with clean robes: and to him he said, See, I have taken your sin away from you.