Matthew Henry
I. When it was that Christ repeated his visit to his disciples: After eight days, that day seven-night after he rose, which must therefore be, as that was, the first day of the week.
Albert Barnes
And after eight days again - That is, on the return of the first day of the week. From this it appears that they thus early set apart this day for assembling together, and Jesus countenanced it by appearing twice with them. It was natural that the apostles should observe this day, but not probable that they would do it without the sanction of the Lord Jesus. His repeated presence gave such a sanction, and the historical fact is indisputable that from this time this day was observed
Jamieson, Fausset and Brown
And after eight days — that is, on the eighth, or first day of the preceding week. They probably met every day during the preceding week, but their Lord designedly reserved His second appearance among them till the recurrence of His resurrection day, that He might thus inaugurate the delightful sanctities of THE LORD’S DAY (
Rev_1:10).
AT Robertson
After eight days (meth' hēmeras oktō). That is the next Sunday evening, on the eighth day in reality just like “after three days” and “on the third day.”
John Wesley
John 20:26
After eight days - On the next Sunday.
John Gill
John 20:26
And after eight days,.... That is, after another week, the same day a week later, which taking in the day in which Christ rose and appeared to Mary Magdalene, and his disciples, and the day in which he now appeared to the disciples with Thomas, made eight days; a like way of speaking see in
Luk_9:28 compared with
Mat_17:1. And Dr. Hammond has proved from Josephus (w), that the Jews used to express a week by eight days.
BW Johnson
After eight days again his disciples were within, and Thomas with them. It was on the second Sunday after the resurrection; the second Lord's day in the history of the world.
I don't see ONE scholar say Monday.
Ya gotta find me a witness somewhere with your view.