For we never came with words of flattery, as you know, nor with a pretext for greed—God is witness. (1 Thessalonians 2:5 -- ESV)
As a demonstration that Paul, Silas, and Timothy were not people-pleasers (See Verse 13), but God Pleasers... Paul points out two evaluative elements. One: Their words weren't words of flattery and Two: There was not a pretext for Greed. In other words, they were not using their words to manipulate the Thessalonians to get what they wanted or to increase themselves in any way.
This is an important element that is often overlooked with many eloquent speakers of the word today... (Who really aren't speakers of the Word of God.)