'Refrain From' in the Bible

“If you see the donkey of someone who hates you lying helpless under its load, and you want to refrain from helping it, you must help with it.

But if you refrain from making a vow, it will not be counted against you as sin.

Refrain from anger and give up your rage;do not be agitated—it can only bring harm.

Or do Barnabas and I alone have no right to refrain from working?