en_tn_condensed/mrk/15/10.md

For he knew that it was because of envy ... Jesus over to him

This is background information about why Jesus was handed over to Pilate. (See: rc://en/ta/man/jit/writing-background)

it was because of envy that the chief priests

They envied Jesus, probably because so many people were following him and becoming his disciples. Alternate translation: "the chief priests were envious of Jesus. This is why they" or "the chief priests were envious of Jesus's popularity among the people. This is why they" (See: rc://en/ta/man/jit/figs-explicit)