John 12:4

Then saith one of his disciples, Judas Iscariot, Simon’s son, which should betray him,
— John 12:4, King James Version

In other translations

World English Bible (WEB)

Then Judas Iscariot, Simon's son, one of his disciples, who would betray him, said,

American Standard Version (ASV)

But Judas Iscariot, one of his disciples, that should betray him, saith,

Young's Literal Translation (YLT)

Therefore saith one of his disciples--Judas Iscariot, of Simon, who is about to deliver him up--