Most Christians worship on Sunday. Some look upon this practice as sin. Charges are often hurled at earnest believers, labeling them as “sun worshippers” or even the recipients of the “mark of the beast.” Some who worship on Sunday are insecure as to the proper day and are easy prey for Sabbath-keeping groups whose Saturday worship may be but a tiny part of a whole system of legalism.
The honest Bible student must face the fact that Saturday is the Sabbath. But sabbath- keeping was part of the Law that was nailed to the cross: “Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross; And having spoiled principalities and powers, he made a shew of them openly, triumphing over them in it. Let no man therefore judge you in meat, or in drink, or in respect of any holy day, or of the new moon, or of the sabbath days: which are a shadow of things to come; but the body is of Christ” (Colossians 2:14-17).
The first day of the week then became the day or worship for the New Testament Church. NO WONDER! This was the day of our Lord’s resurrection (see John 20:1) signaling complete victory.
Perhaps the spiritual meaning of the first day of the week is the most important reason for observing it as the day of worship. The Sabbath pictures the Law perfectly. Under law, one worked and then rested. The first day of the week pictures grace. Under grace, we enter into our rest in Christ and then we work to serve Him.