Adam Clarke's Commentary on the Bible - John 20:27
Then saith he to Thomas - Through his infinite compassion, he addressed him in a particular manner; condescending in this case to accommodate himself to the prejudices of an obstinate, though sincere, disciple. Reach hither thy finger, etc. - And it is very probable that Thomas did so; for his unbelief was too deeply rooted to be easily cured. read more
Adam Clarke's Commentary on the Bible - John 20:26
After eight days - It seems likely that this was precisely on that day se'nnight, on which Christ had appeared to them before; and from this we may learn that this was the weekly meeting of the apostles; and, though Thomas was not found at the former meeting, he was determined not to be absent from this. According to his custom, Jesus came again; for he cannot forget his promise - two or three are assembled in his name; and he has engaged to be among them. read more