A.T. Robertson Commentary Mark 10:35

"And there come near unto him James and John, the sons of Zebedee, saying unto him, Teacher, we would that thou shouldest do for us whatsoever we shall ask of thee." — Mark 10:35 (ASV)

There come near unto him James and John (κα προσπορευοντα Ιακωβος κα Ιωανης). Dramatic present tense. Matthew has τοτε, then, showing that the request of the two brothers with their mother (Matthew 20:20) comes immediately after the talk about Christ's death.

We would (θελομεν). We wish, we want, bluntly told.

She came worshipping (προσκυνουσα) Matthew says. The mother spoke for the sons. But they try to commit Jesus to their desires before they tell what they are, just like spoiled children.