Exodus 28:37

And thou shalt put it on a blue lace, that it may be upon the mitre; upon the forefront of the mitre it shall be.
— Exodus 28:37, King James Version

In other translations

World English Bible (WEB)

You shall put it on a lace of blue, and it shall be on the sash; on the front of the sash it shall be.

American Standard Version (ASV)

And thou shalt put it on a lace of blue, and it shall be upon the mitre; upon the forefront of the mitre it shall be.

Young's Literal Translation (YLT)

and thou hast put it on a blue ribbon, and it hath been on the mitre--over-against the front of the mitre it is;