Adam Clarke on 2 Corinthians 11:9

And when I was present with you - The particle και which we translate and, should be rendered for in this place: For when I was with you, and was in want, I was chargeable to no man. I preferred to be, for a time, even without the necessaries of life, rather than be a burden to you. To whom was this a reproach, to me or to you?

The brethren which came from Macedonia - He probably refers to the supplies which he received from the Church at Philippi, which was in Macedonia; of which he says, that in the beginning of the Gospel no Church communicated with me, as concerning giving and receiving, but you only; for even at Thessalonica ye sent once and again to my necessity, Phi 4:15, Phi 4:16. See the Introduction, Section 6.