My study Bible has "Do no harm" in the study note for Luke 17:1-3.

1 Then said he unto the disciples, It is impossible but that offences will come: but woe unto him, through whom they come!

2 It were better for him that a millstone were hanged about his neck, and he cast into the sea, than that he should offend one of these little ones.

3 Take heed to yourselves: If thy brother trespass against thee, rebuke him; and if he repent, forgive him.

https://www.kingjamesbibleonline.org/Luke-Chapter-17/

The study note says:

Jesus may have been directing this warning at the religious leaders who taught their converts their own hypocritical ways (see Matthew 23:15). They were perpetuating an evil system. A person who teaches others has a solemn responsibility (James 3:1). Like physicians, a teacher should keep this ancient oath in mind: "First, do no harm."

My study Bible has "Do no harm" in the study note for Luke 17:1-3.

1 Then said he unto the disciples, It is impossible but that offences will come: but woe unto him, through whom they come!

2 It were better for him that a millstone were hanged about his neck, and he cast into the sea, than that he should offend one of these little ones.

3 Take heed to yourselves: If thy brother trespass against thee, rebuke him; and if he repent, forgive him.

https://www.kingjamesbibleonline.org/Luke-Chapter-17/

The study note says:

Jesus may have been directing this warning at the religious leaders who taught their converts their own hypocritical ways (see Matthew 23:15). They were perpetuating an evil system. A person who teaches others has a solemn responsibility (James 3:1). Like physicians, a teacher should keep this ancient oath in mind: "First, do no harm."