Exodus 29:5

Aaron should dress in the priestly shirt and robe under the sacred vest. Put on the vest, the breast piece, and the sash.

Exodus 28:2-8

Make sacred clothes for your brother Aaron to give him dignity and honor.

Leviticus 8:7-8

He clothed Aaron with the embroidered tunic and tied the sash around him. He also dressed him in the linen robe that is worn with the ephod. He fastened the ephod to it.

Treasury of Scripture Knowledge

Summary

And thou shalt take the garments, and put upon Aaron the coat, and the robe of the ephod, and the ephod, and the breastplate, and gird him with the curious girdle of the ephod:

Bible References

Garments

Exodus 28:2
Make sacred clothes for your brother Aaron to give him dignity and honor.
Leviticus 8:7
He clothed Aaron with the embroidered tunic and tied the sash around him. He also dressed him in the linen robe that is worn with the ephod. He fastened the ephod to it.