for (one's) benefit
Largely (or solely) to help one. I hope you're not doing that for my benefit—I don't really have a preference at all. I only said that for your sister's benefit, so she won't worry. Honestly, I don't expect this situation to get better any time soon.
for somebody’s ˈbenefit
especially in order to help or be useful to somebody: There’s no need to repeat everything for my benefit.I have produced some notes for the benefit of those people who weren’t at the meeting.