Note 4 at Phil. 1:5: Why is it that Paul had such joy and thanksgiving every time he thought of the Philippians? He gives the answer here. It is because of their "fellowship in the gospel." The word "fellowship" was translated from the Greek word KOINONIA, which meant "partnership or participation." This word was translated "contribution" in Romans 15:26 and "distribution" in 2 Corinthians 9:13. Both of these words were dealing with finances.

Paul very clearly states, later in this same letter (Phil. 4:15-16), that the Philippians were the only church that supported him in the beginning of his ministry. One of the reasons Paul had such fond thoughts about the Philippians was that they had sacrificially supported him with their finances. Certainly there were other things involved, but finances were one of the important ways the Philippians had shown their love and support for Paul.

Note 5 at Phil. 1:5: As explained in the previous footnote, Paul was referring to the Philippians' support for him, including financial contributions. Here he says that this support was "from the first day until now." Certainly, one of the things that caused Paul to rejoice every time he thought of the Philippians was their faithfulness over a period of time.

It is a blessing to have people express their love for you to any degree. But sad to say, this type of fellowship doesn't typically last very long. Partnerships are hard to maintain. Many things work against partnerships and most don't last long. It is a real joy to a minister to have people who were ministered to many years ago remember him and still support the work he is doing.