“Jesus took with him

Peter

And the two sons

Of Zebedee.

He began

To be grieved

And agitated.

Then he said to them.

‘I am deeply sorrowful,

Even to death.

Remain here!

Stay awake

Watching with me!’”

καὶ παραλαβὼν τὸν Πέτρον καὶ τοὺς δύο υἱοὺς Ζεβεδαίου ἤρξατο λυπεῖσθαι καὶ ἀδημονεῖν.

τότε λέγει αὐτοῖς Περίλυπός ἐστιν ἡ ψυχή μου ἕως θανάτου· μείνατε ὧδε καὶ γρηγορεῖτε μετ’ ἐμοῦ.

This is almost word for word in Mark, chapter 14:33-34, but James and John are named rather than called the sons of Zebedee.  In Luke, chapter 22, and in John, chapter 18, there is no mention of these 3 apostles being separated from the others.  Matthew and Mark said that Jesus took with him Peter and the two sons of Zebedee (καὶ παραλαβὼν τὸν Πέτρον καὶ τοὺς δύο υἱοὺς Ζεβεδαίου), that is James and John.  Jesus began to be grieved, pained, sorrowful, troubled, distressed, and agitated (ἤρξατο λυπεῖσθαι καὶ ἀδημονεῖν).  Both these gospel writers showed the vulnerability of Jesus in his suffering.  Then Jesus said to these 3 apostles (τότε λέγει αὐτοῖς) that his soul was very sorrowful, deeply grieved (Περίλυπός ἐστιν ἡ ψυχή μου), even unto death (ἕως θανάτου).  He wanted them to stay there (μείνατε ὧδε) to watch or remain vigilant with him (καὶ γρηγορεῖτε μετ’ ἐμοῦ).  Thus, began the so-called agony of Jesus in the garden.