Definitions of words in Isaiah 58:13:
As {International Standard Bible Encyclopedia}
Day {Easton's Bible Dictionary}
Day {International Standard Bible Encyclopedia}
First {International Standard Bible Encyclopedia}
Sabbath {Easton's Bible Dictionary}
Sabbath {International Standard Bible Encyclopedia}
Worship {Easton's Bible Dictionary}
Worship {International Standard Bible Encyclopedia}
On {Easton's Bible Dictionary}
On {Hitchcock's Bible Names}