John Calvin Commentary Philippians 2:22

"But ye know the proof of him, that, as a child [serveth] a father, [so] he served with me in furtherance of the gospel." — Philippians 2:22 (ASV)

But the proof. This is literally, you know the proof of him, unless you prefer to understand it in the imperative mood as know you (since there had scarcely been opportunity during that short time to put him to the test); however, this distinction is not of great significance. What is chiefly to be noticed is that he provides Timothy with an attestation of fidelity and modesty.

In evidence of his fidelity, he declares that Timothy had served with him in the gospel, for such a connection was a sign of true sincerity. In evidence of his modesty, he states that Timothy had submitted to him as to a father. It is no wonder that this virtue is expressly commended by Paul, for it has in all ages been rare.

Today, where will you find one among the young who will defer to his seniors, even in the smallest thing? To such an extent does impertinence triumph and prevail in this age! In this passage, as in many others, we see how diligently Paul makes it his aim to honor pious ministers, not so much for their own sakes, but because it is advantageous for the whole Church that such persons should be loved, honored, and possess the highest authority.