The beginning of Tetzaveh in Shemot 28:3, G-d tells Moshe to speak to the "people whom G-d inspired with knowledge of the heart" to make the garments for Aharon and his sons.
In viewing the language used for the different garments, I noticed that only the ephod is expressed in plural "**they**** shall make. All the other garments, the stones, the chains, etc. are expressed in singular.
Didn't the above cited verse say that the "wise men" should make these items? Why wasn't the plural used for all the garments? What was different about the ephod that only for that the Torah used the plural form?