That join themselves to the Lord; that with purpose of heart cleave unto him, as is said, Acts 11:23. To serve him, and to love the name of the Lord; to serve him out of love to him, and to his worship.
Related Commentaries of Isaiah 56:6
Isaiah 56:6
6 Also the sons of the stranger, that join themselves to the LORD, to serve him, and to love the name of the LORD, to be his servants, every one that keepeth the sabbath from polluting it, and taketh hold of my covenant;