John the Apostle
John 9:7BSB·traditional attribution

Then He told him, “Go, wash in the Pool of Siloam” (which means “Sent”). So the man went and washed, and came back seeing.

John Calvin Reformed @genevareformer

7. Go, wash in the pool of Siloam. Unquestionably, there was not, either in the clay, or in the water of Siloam, any power or fitness for curing the eyes; but Christ freely made use of those outward symbols, on various occasions, for adorning his miracles, either to accustom believers to the use of signs, or to show that all things were at his disposal...

Matthew Henry Presbyterian @wholebiblehenry

We have here sight given to a poor beggar that had been blind from his birth. Observe, I. The notice which our Lord Jesus took of the piteous case of this poor blind man (Joh 9:1): As Jesus passed by he saw a man which was blind from his birth.

Commenting on John 9:1-7

John Gill Reformed Baptist @doctorgill

And said unto him, go wash in the Pool of Siloam,.... A fountain of this name is called Siloah, Isa 8:6, and according to the Jewish writers, sometimes Gihon (e); and this, they say (f), was without Jerusalem, though near unto it: hither the Jews went at the feast of tabernacles (g), and drew water with great rejoicing, and brought it, and poured it on...