'Flattering' in the Bible

For such people do not serve our Lord Christ, but their own appetites and base desires. By smooth and flattering speech they deceive the hearts of the unsuspecting [the innocent and the naive].

These people are [habitual] murmurers, griping and complaining, following after their own desires [controlled by passion]; they speak arrogantly, [pretending admiration and] flattering people to gain an advantage.