From the BDAG, we get the following. I'll post all the pages of the word if anyone wants:
to engage in activity that involves effort, work, intr. work, be activehttp://www.baptistboard.com/#_ftn2 intr. intr. = intransitive
http://www.baptistboard.com/#_ftnref2Arndt, William ; Danker, Frederick W. ; Bauer, Walter:
A Greek-English Lexicon of the New Testament and Other Early Christian Literature. 3rd ed. Chicago : University of Chicago Press, 2000, S. 389
Look back to Romans 4:4: The one who is working, it's not a favor, it's a debt.
We don't earn being saved.
In both verse 4 and verse 5, "working" is a present, participle, and in both cases, it's in the middle voice and singular.
It's also found in Matthew 21:28, but it's an imperative; it's a command to do something: But what think ye? A [certain] man had two sons; and he came to the first, and said, Son, go work to day in my vineyard.
Matthew 25:16 where "traded" is the same word: Then he that had received the five talents went and traded with the same, and made [them] other five talents.
In fact, it's in 39 verses in the NT, and in all but one of them, it's in the middle voice, except for John 3:21, which is a perfect, passive, participle: Jn 3:21
But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.
Matthew 26:10: When Jesus understood [it], he said unto them, Why trouble ye the woman? for she hath wrought a good work upon me.
Mark 14:6: And Jesus said, Let her alone; why trouble ye her? she hath wrought a good work on me.
Luke 13:14, in which is also present tense, so should be "working": And the ruler of the synagogue answered with indignation, because that Jesus had healed on the sabbath day, and said unto the people, There are six days in which men ought to work: in them therefore come and be healed, and not on the sabbath day.
John 5:17: But Jesus answered them, My Father worketh hitherto, and I work.
John 6:30: They said therefore unto him, What sign shewest thou then, that we may see, and believe thee? what dost thou work?
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