This is the Day That The Lord Has Made.

Let the day be solemnized to the honour of God with great joy: This is the day the Lord has made. The whole time of the gospel-dispensation, that accepted time, that day of salvation, is what the Lord has made so it is a continual feast, which ought to be kept with joy. Or it may very fitly be understood of the Christian Sabbath, which we sanctify in remembrance of Christ's resurrection, when the rejected stone began to be exalted and so, here is the doctrine of the Christian Sabbath: It is the day which the Lord has made, has made remarkable, made holy, has distinguished from other days he has made it for man: it is therefore called the Lord's day, for it bears his image and superscription. The duty of the Sabbath, the work of the day that is to be done in his day: We will rejoice and be glad in it, not only in the institution of the day, that there is such a day appointed, but in the occasion of it, Christ's becoming the head of the corner. This we ought to rejoice in both as his honour and our advantage. Sabbath days must be rejoicing days, and then they are to us as the days of heaven. See what a good Master we serve, who, having instituted a day for his service, appoints it to be spent in holy joy. - Matthew Henry