Romans 15:22-24 — For which cause also I have been much hindered from coming to you.
But now having no more place in these parts, and having a great desire these many years to come unto you;
Whensoever I take my journey into Spain, I will come to you: for I trust to see you in my journey, and to be brought on my way thitherward by you, if first I be somewhat filled with your company.
for which cause — Paul's efforts to visit where Christ had not been preached.
Spain — under Roman rule since 133 BC. It had a large Jewish population. (Some think Paul made it to Spain, but there is no biblical evidence that he did so.)
filled with your company — refreshed (see verse 32)