The New John Gill Exposition of the Entire BibleExodus 28:23
And thou shalt make upon the breastplate two rings of gold,
&c.] On the upper part of it, above, toward the two shoulder pieces of
the ephod; these were to put one end of the chains into before
and shall put the two rings on the two ends of the breastplate;
upper ends or corners of it, the right and left.