John the Apostle
John 12:4BSB·traditional attribution

But one of His disciples, Judas Iscariot, who was going to betray Him, asked,

John Calvin Reformed @genevareformer

4. One of his disciples, therefore, saith. Next follows the murmuring of Judas, which Matthew (Matthew 16:8) attributes to the disciples indiscriminately, and Mark (Mark 14:4) to some of them; but it is customary in Scripture to apply to many, by way of synecdoche, what belongs to one or to a few.

Matthew Henry Presbyterian @wholebiblehenry

In these verses we have, I. The kind visit our Lord Jesus paid to his friends at Bethany, Joh 12:1. He came up out of the country, six days before the passover, and took up at Bethany, a town which, according to the computation of our metropolis, lay so near Jerusalem as to be within the bills of mortality.

Commenting on John 12:1-11

John Gill Reformed Baptist @doctorgill

Then saith one of his disciples,.... Who had no true love for his master, was an hypocrite, and a covetous person: Judas Iscariot; so called, to distinguish him from another Judas, an apostle; See Gill on Mat 10:4. Simon's son; this is omitted in the Vulgate Latin, Syriac, Persic, and Ethiopic versions; See Gill on Joh 13:2; which should betray him; and so he did...