A key feature is the inner mismatch behind the words. The “double heart” picture ties deceptive speech to divided intent—what is said outwardly does not match what is meant inwardly. The verse presents this as a repeated pattern of speaking, not a one-time slip.

Where interpretation differs (only where needed)

Two questions are commonly read differently:

1. How absolute is “everyone”? Some read it as a near-literal claim that deception is virtually universal in the speaker’s setting. Others read it as a deliberate overstatement meant to highlight how pervasive the problem feels.

2. What exactly is a “double heart”? Some take it as calculated two-facedness (presenting one face while hiding another). Others take it more broadly as mixed motives and instability—still dishonest in effect, but not always a carefully planned scheme.

Why the disagreement exists The verse uses compact poetic language. Words like “everyone” can function as either a strict description or a rhetorical complaint. Likewise, “double heart” is an image; it points clearly to inner division but leaves room about whether that division is intentional manipulation or conflicted motives.

What this passage clearly contributes Explicitly, the text claims that lies are being spoken to “neighbor,” and it links three elements: false content, flattering delivery, and divided intent. By connecting the outward style (“flattering lips”) with the inward condition (“double heart”), the verse frames speech ethics as an integrity issue, not merely a communication issue. It also sets up Psalm 12’s wider concern: speech can become a public threat when trust erodes in everyday relationships (Psalm 12:2).

flattering (ḥă·lā·qō·wṯ)