Summary: Aaron's ephod held meaning for worship in the Tabernacle as it does for us today in the NT church.
Exodus 28:1-3 KJV And take thou unto thee Aaron thy brother, and his sons with him, from among the children of Israel, that he may minister unto me in the priest's office, even Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron's sons.  And thou shalt make holy garments for Aaron thy brother for glory and for beauty.  And thou shalt speak unto all that are wise hearted, whom I have filled with the spirit of wisdom, that they may make Aaron's garments to consecrate him, that he may minister unto me in the priest's office.
Exodus 28:6-12 KJV And they shall make the ephod of gold, of blue, and of purple, of scarlet, and fine twined linen, with cunning work.  It shall have the two shoulderpieces thereof joined at the two edges thereof; and so it shall be joined together.  And the curious girdle of the ephod, which is upon it, shall be of the same, according to the work thereof; even of gold, of blue, and purple, and scarlet, and fine twined linen.  And thou shalt take two onyx stones, and grave on them the names of the children of Israel:  Six of their names on one stone, and the other six names of the rest on the other stone, according to their birth.  With the work of an engraver in stone, like the engravings of a signet, shalt thou engrave the two stones with the names of the children of Israel: thou shalt make them to be set in ouches of gold.  And thou shalt put the two stones upon the shoulders of the ephod for stones of memorial unto the children of Israel: and Aaron shall bear their names before the LORD upon his two shoulders for a memorial.
This is the last article of the priest’s garments that we will look at. Just as with the Tabernacle, there are many more aspects that could be explored with a greater focus. All of these garments brought a certain sense of dignity, honor, and reverence to the worship of Jehovah. Not only did it elevate the office of the priesthood, it also elevated the individual priest who was to go into a holy place to perform a holy function. Those who enter into the sanctuary of the Lord must have on the holy garments. Furthermore, there was a demand on these holy men who wore the priestly garments that they would be wise and precise.
• The attire is crucial because of the fact that we are ambassadors for God and stewards of the mysteries.
• The attire is crucial because it is associated with the great purpose of God’s redemption.
• The attire is crucial because it typifies the glorious robes we will wear in Heaven.
• The attire is crucial because they have been assigned by the will of God.
• The attire is crucial because it was directly related to the other colors of the Tabernacle and later the Temple.
• The attire is crucial because of the priority of worship that it was involved with. Man could not be involved in the worship with any higher than Jehovah.
There must be dignity and reverence in every aspect of worship. In fact there is a passage from one of the Old Testament prophets that emphasizes this concept.