NET
4 We must perform the deeds of the one who sent me as long as it is daytime. Night is coming when no one can work.
Darby
4 I must work the works of him that has sent me while it is day. [The] night is coming, when no one can work.
KJV
4 “I must work the works of him that sent me, while it is day: the night cometh, when no man can work.”