That seems to be how the verse goes: "We lay our garments by." There are two websites out there, this one, unaccountably shared by Amazing Grace and Spider Man, and also this site, which is dedicated to the Dallas Scottish Country Dancers. People commonly also import all the verses from "Must Jesus Bear the Cross Alone," into Amazing Grace, just to make it longer.

I think if your really want to sing that verse, it would work just to insert rests for the first two syllables.