Shared ground
These two lines open a longer warning by establishing the relationship and method: a teacher speaks personally (“my son”) and calls for intentional listening. The words for “pay attention” and “turn your ear” picture more than hearing sounds; they describe focused reception of instruction.
The passage states two intended results of this listening. First, it aims at “maintaining discretion,” meaning an inner capacity to choose well and avoid harmful paths. Second, it aims at speech that “preserves knowledge,” linking what is learned to what is kept and expressed. Explicitly, the text connects careful listening with wise judgment and guarded speech.
Where interpretation differs
Some readers take “my son” as a literal parent addressing a biological child, while others read it as a standard teacher-to-student address that can include any learner. Either way, the text presents a close, authoritative teaching relationship.
Some also hear “my wisdom” as the speaker’s personal counsel (shaped by experience), while others hear it as the received wisdom tradition being handed on. In both cases, the content is presented as reliable guidance rather than private opinion.
“Preserve knowledge” can be read with an emphasis on retention (not losing what one has learned) or on guarded speech (not misusing words, and speaking what fits the truth). The verse itself supports both, since it ties “knowledge” specifically to the “lips.”
Why the disagreement exists
The Hebrew-style phrases are brief and can carry more than one shade of meaning. The imagery can point to inner memory (keeping knowledge) and to outward communication (lips), and the “son” address can function in both family and classroom settings.
What this passage clearly contributes
The text sets a pattern for wisdom in Proverbs: instruction is received through deliberate attentiveness, and it is meant to form both inner judgment (“discretion”) and outward speech (“lips”). As an opening call, it frames the following teaching as something that should be listened to carefully because it protects decision-making and the use of words.