QUESTION: What caused the Sabbath to change from the last day of the week to the first day of the week?

ANSWER: This so-called “change” has occurred only in the mind and vocabulary of man. It is not biblical to refer to the first day of the week as “the Sabbath.” People today, under the New Testament, are not directed or authorized to keep the seventh day, but, rather, are directed to worship on the first day of the week (Acts 20:7; I Corinthians 16:1-2). Keeping of the seventh day (the Sabbath) was a part of the Old Testament Law, which was done away with in Christ (II Corinthians 3; Galatians 3:16-19; Ephesians 2:13-14; Hebrews 7:12; Hebrews 8:7). Christians cannot observe any part of the Old Law (including the Sabbath), because to do so is to fall from grace (Galatians 5:4)! Neither may they permit any man to judge them in respect of the Sabbath days (Colossians 2:16).