Make a horn on each of its four corners, so that the horns are of one piece, and overlay it with bronze.
As God intended in the tabernacle to manifest his presence among his people, so there they were to pay their devotions to him, not in the tabernacle itself (into that only the priests entered as God's domestic servants), but in the court before the tabernacle, where, as common subjects, they attended.
Commenting on Exodus 27:1-8
Which were either for ornament, or for keeping what was laid upon the altar from falling off, or for the fastening of the sacrifice to them, and were what criminals fled to for refuge, and laid hold on; and may denote the power of Christ, who is the horn of salvation to preserve his people from a final falling away, and from ruin and destruction...
And thou shalt make the horns of it upon the four corners thereof: his horns shall be of the same: and thou shalt overlay it with brass. (b) Of the same wood and matter not fastened to it.