This verse opens the father's lecture on trusting the LORD, Proverbs 3:1–12.
Quick answer
A father asks his son to hold what he has been taught, not with a filing cabinet but with a heart: instruction kept the way you keep something you love.
Read the whole unit
The father's lecture on trusting the LORD is built with unusual symmetry: six pairs of verses, each an instruction followed by its outcome. Keep the teaching, and find long life (vv. 1–2). Bind mercy and truth to yourself, and find favor (vv. 3–4). Trust the LORD, and find straight paths (vv. 5–6). Fear the LORD instead of trusting yourself, and find health (vv. 7–8). Honor the LORD with your possessions, and find full barns (vv. 9–10). And then the pair nobody frames for the wall: do not despise the LORD's discipline, because it is the treatment sons receive from a Father who delights in them (vv. 11–12). That last pair is not an afterthought; it is the lecture's safety rail. Five pairs of blessing language could curdle into a formula, as if trust and generosity were coins for a vending machine. The sixth pair breaks the machine: the life of trust includes correction, and correction is not the system failing you. It is the Father loving you. The whole lecture describes how life tends to go inside a relationship with the LORD; it observes the grain of the world under God's active government. It does not sign contracts, and it never asks the reader to earn what the relationship already holds.
What this verse contributes
This verse locates wisdom's address: the heart. The father does not ask for memorization but for keeping, and "do not forget" is not about weak memory but wandering loyalty; in the Old Testament, forgetting is what Israel did when she drifted from the LORD while still reciting the right words. The lecture will end up talking about barns and bones and sleep, but it starts where wisdom always starts in this book, with what the heart holds.
Related: Proverbs 4:23 · Deuteronomy 6:6
New King James Version®, Copyright © 1982, Thomas Nelson. All rights reserved. Full copyright information. Scripture provided by API.Bible.
Go Deeper
If this verse has been used to put weight on you that it was never carrying, ask about it directly.