'Flattery' in the Bible

{Please let me not show partiality to anyone}, and let me not show flattery to human beings,

"And those who violate [the] covenant he will seduce with flattery, but the persons who know their God will stand firm and will take action.

For such people do not serve our Lord Christ, but their own stomach, and by smooth speech and flattery they deceive the hearts of the unsuspecting.

{For never} did we come with a word of flattery, just as you know, nor with a pretext of greediness (God [is] witness),