But the man that is clean, and is not in a journey. This threat was added no doubt in order to prevent men from taking advantage of the permission to keep a supplemental passover in order to suit their own convenience or interest.
Only two reasons could absolve a man from the absolute necessity of keeping the passover at the due season, and these reasons must be bona fide, and not pretended. Because he brought not the offering of the Lord.
In the original institution the paschal lamb did not appear distinctly in the character of an offering made to God, although undoubtedly it was such. It was rather the eating of the lamb that was insisted upon, as placing the partaker in communion with the God and Church of Israel, and so in a state of salvation.
But after the law of sacrifices had been elaborated, then the paschal lamb, though prior to them all, naturally took its place amongst them as the greatest of them all, and as uniting in itself the special beauties of all.