Isaiah 17:10 Commentary: Forgetting the Rock, Planting Futility

Isaiah 17 belongs to a series of oracles against the nations, but here the focus narrows to the northern kingdom of Israel (often called Ephraim after its dominant tribe). The prophet ministered during the Assyrian threat of the eighth century BC. In 734, 732 BC, Israel and Syria allied against Assyria and tried to force Judah into their coalition. That scheme failed, and Assyria crushed both Syria and Israel, deporting the northern tribes by 722 BC.

Against this backdrop, verse 10 names the spiritual disease behind the political catastrophe. The God whom Israel 'forgot' was not abstract, he had rescued them from Egypt, given the land, and revealed his name as a 'Rock' (tsur), a fortress no enemy could breach. The term appears repeatedly in Moses' song (Deuteronomy 32) and in the Psalms. To forget him was to abandon the only foundation of their existence.

The 'pleasant plants' and 'strange slips' would have resonated with an agricultural audience. Yet the Hebrew word for 'pleasantness' (na'aman) echoes the name of the Syrian deity Adonis, worshipped with rapidly sprouting gardens that withered in a day, a symbol of futility. The Cambridge Bible persuasively argues that Israel, through its alliance with Damascus, imported not only vines but the cult of a foreign god. Even if the Adonis connection is disputed, the phrase 'foreign seedlings' signals that Israel invested in something alien, whether literal exotic crops or the religious and political practices of neighboring nations. They looked to Egypt for help (cf. Isaiah 30, 31) and to idols for blessing, but their labor would be stolen by the very enemy they had trusted.

In a world where kings boasted of treaty alliances, Isaiah dares to say that only one Rock can hold. Forget him, and the most careful cultivation turns to waste. But remembering him restores hope to our labor, rooting it in what will last.

The consulted sources note no significant textual variants for Isaiah 17:10. The Masoretic Text is consistent across Hebrew manuscripts. The Septuagint renders 'pleasant plants' with a general phrase, possibly avoiding the Adonis reference for a broader audience, but this reflects translation choice rather than a different underlying text. The Targum and Vulgate align with the Hebrew.

Isaiah 17:10 has been read across traditions as a stark warning against forgetting the true God. Jewish Targumic interpretations emphasize the ingratitude for past salvations. Early Christian tradition used the verse to contrast the fleeting nature of pagan cults with the eternal rock of Christ. Reformation commentators such as Calvin and Matthew Henry stressed the heinousness of ingratitude and the danger of seeking security in human inventions. In modern scholarship, the possible allusion to Adonis worship has opened a window into the religious syncretism of eighth-century Israel, while the passage continues to challenge readers who find themselves relying on their own resources rather than on the God who saves.

Three-point outline

1. The sin: forgetting the Rock. (v.10a) Israel had experienced repeated deliverance, from Egypt, through the wilderness, into the land, yet they let the memory slip. Calvin calls this 'monstrous ingratitude.' Forgetting was not a passive gap; it was an active shift of trust. They stopped calling upon the God who saves and started relying on their own resources.
2. The substitute: planting pleasant plants. (v.10b) With God no longer central, they planted 'pleasant plants' and 'strange slips.' Whether these are literal exotic crops or symbols of idolatry and foreign treaties (Clarke sees both), the point is the same: they invested in things that looked appealing but came from outside the covenant. The Hebrew word for 'pleasantness' (na'aman) may even allude to the Adonis cult, a fertility religion whose gardens bloomed and died within days, a fitting picture of short-lived hope.
3. The sentence: a harvest of grief. (v.11, context) Verse 11 describes rapid growth followed by a day of 'desperate sorrow.' The crop that seemed so promising becomes a heap of loss. This is the sobering logic of the covenant: what we build while ignoring God will not stand.

Five-point outline

1. Remember what God has done: He is the God of salvation.
2. Recognize your true refuge: He is the Rock of strength.
3. Identify the 'pleasant plants' in your life: your own projects, trusted alliances, spiritual counterfeits.
4. Watch for 'foreign seedlings': practices and priorities that belong to a world without God.
5. Await the harvest: either grief for those who forget, or life for those who remember.

Illustration hooks

• A gardener invests heavily in exotic imported seeds, spending hours on soil preparation, only for a late frost to kill every shoot. His neighbor, who planted native hardy crops, has a full barn.
• A small business owner pours savings into a flashy marketing scheme rather than solid operations. The campaign goes viral for a week, then the company folds.
• A teenager forgets the foundational instruction of a parent and follows the crowd into a destructive habit, only to face consequences that could have been avoided.

Questions your congregation is asking

• How do I know if I have 'forgotten' God when I still go to church and pray?
• What are the 'pleasant plants' I might be cultivating that actually push God to the margins?
• How can I keep God as my Rock without it sounding like a cliché?

Isaiah 17:10 exposes the human tendency to replace trust in God with our own efforts. As you discuss, consider what 'forgetting' looks like in practice and what 'pleasant plants' we cultivate today.

Discussion questions

1. Read the verse aloud. What two things does the prophet say Israel failed to do? How are they connected?
2. The titles 'God of your salvation' and 'Rock of your strength' are rich with Old Testament history. What do they tell you about God's character?
3. In what sense can 'forgetting' be an active sin rather than a passive lapse of memory?
4. The 'pleasant plants' and 'strange slips' are deliberately ambiguous. Why might the prophet use agricultural language to warn about reliance on idols and alliances?
5. Think of three 'plantings' people in your community trust in instead of God. How do they seem attractive at first?
6. Verse 11 (the next verse) describes rapid growth followed by a harvest of grief. What does this say about the durability of what we build apart from God?
7. How can small groups help members 'remember' God in concrete ways during times of pressure or prosperity?