Saint Paul hastens to remove such a reproach. It could have served as a barrier between him and the Thessalonians.
Moreover, by rejecting this reproach, the holy Apostle thereby weakened the other two as well, greed and seeking glory. No one can succeed in them without flattery.
Saint Chrysostom places them in precisely this dependence, saying: "We did not flatter, as men do who seek profit or power. It cannot be said that we flattered in order to attain power, or that we resolved upon this for money."
The Apostle says: we were not toward you "with a word of flattery," εν λογω κολακειας. We did not approach you with flattering speech. Our word to you was foreign to flattery, both in manner of speech and in its content.
But λογος also means the sense of a matter, motive, or cause. If this is accepted, the Apostle's thought will be this: we did not approach you or act among you in a spirit of flattery.
In that case "with a word of flattery," εν λογω κολακειας, together with εν προφασει πλεονεξιας, embraces all the activity of the Apostles. In the first sense, it concerns only word, conversation, and preaching.
"Nor with a pretext for greed." We did not act among you with designs of gain. We came to you to benefit you by the preaching of the Gospel, not to make gain from you.
"With a pretext for greed," εν προφασει πλεονεξιας. Προφασις means pretext and intention. The Apostle wishes to say: under the fair appearance of preaching and apostolic work, we did not conceal mercenary designs.
He does not mean merely that no one can convict them of this, or that nothing of the kind appeared. He means that they did not even have greedy plans in their heart, and that it never entered their mind (Oecumenius).
Why does the Apostle call God as witness here? Because of the seriousness of the reproach, which could cause great harm to the work of preaching if it were not removed.
Yet one cannot see that the Apostles truly had no such aims, since these aims are hidden in the heart. Therefore the Apostle calls God as witness, Who tests hearts, and before Whom and from Whom they act (cf. Rom 1:9; Phil 1:8).
He wants not even a trace of such a dark thought about them to remain. He invites them to look into their conscience by the light of God's omniscience.
"With respect to flattery," says Blessed Theodoret, following Chrysostom, "the Apostle named them themselves, the Thessalonians, as witnesses, because flattering words are evident to those who hear them."
"But with respect to greed, he named not only them, but also Him Who watches over the whole universe, because the purpose for which something is done is often hidden from men."