The man — Every man not only Jews but Gentiles, as it is explained in the following verses. The sabbath — The sabbath seems to be put here, as sacrifice is elsewhere, for the whole worship of God.
Related Commentaries of Isaiah 56:2
Isaiah 56:2
2 Blessed is the man that doeth this, and the son of man that layeth hold on it; that keepeth the sabbath from polluting it, and keepeth his hand from doing any evil.