Exodus 39:4

2 And he made the ephod of gold, blue, and purple, and scarlet, and fine twined linen.

3 And they did beat the gold into thin plates, and cut it into wires, to work it in the blue, and in the purple, and in the scarlet, and in the fine linen, with cunning work.

They made shoulderpieces for it, to couple it together: by the two edges was it coupled together.

5 And the curious girdle of his ephod, that was upon it, was of the same, according to the work thereof; of gold, blue, and purple, and scarlet, and fine twined linen; as the LORD commanded Moses.

6 And they wrought onyx stones inclosed in ouches of gold, graven, as signets are graven, with the names of the children of Israel.

This was said to Israel at a particular time, so it is wise to read it together with the surrounding text. Do read the surrounding verses too, because the context often says more than a single verse.

Compare

BSB
They made shoulder pieces for the ephod, which were attached at two of its corners, so it could be fastened.
KJV
They made shoulderpieces for it, to couple it together: by the two edges was it coupled together.
WEB
They made shoulder straps for it, joined together. It was joined together at the two ends.
ASV
They made shoulder-pieces for it, joined together; at the two ends was it joined together.
DARBY
They made shoulder-pieces for it, joining it: at its two ends was it joined together.
BLB
They made shoulder straps for it to join [it] together; at its two ends it was joined together.
ÅB
De gjorde skulderstykker som ble festet til hverandre; med dem ble den hektet sammen i begge ender.
OTB
De laget skulderstykker til efoden, som ble festet ved dens to øvre hjørner.
B1930
De gjorde skulderstykker som blev festet til hverandre; med dem blev den hektet sammen i begge ender.

Study notes (Tyndale)

Original text and word study