The transition from material wealth to spiritual ruin is a profound danger. God is bound by His oath to the forefathers to bring the Israelites into the promised land, but He warns them in advance so that the comforts of prosperity do not cause them to forget Him [שפתי כהן]. Extreme economic success often leads to an addiction to physical pleasures [ביאור שטיינזלץ]. The primary approach among commentators is that this reality of excess is the direct catalyst for sin. Human nature dictates that excessive satisfaction breeds arrogance, leading people to reject the very source of their goodness and making them highly prone to transgression [תורה תמימה, ביאור יש״ר, בכור שור]. This betrayal is especially severe because the people respond to God's immense generosity with evil [מלבי״ם].
The pull toward idol worship does not primarily stem from the external temptation of surrounding nations [העמק דבר]. Instead, it arises from a deep, internal desire to throw off responsibility. The moral and spiritual demands of the Torah restrict physical desires, which clashes with a society immersed in luxury. Consequently, the people seek to free themselves from the burden of the Commandments to satisfy their urges without limitation [בכור שור, רש ר הירש]. Idolatry is appealing because it requires far less spiritual discipline; it provides legitimacy for a lack of restraint and glorifies material urges [העמק דבר, רש ר הירש].
Turning to other deities does not imply these idols possess any actual authority. They are simply foreign entities that the people artificially crown as gods, and assigning them true divine status is an insult to God [הכתב והקבלה]. Historically, this tragic cycle of wealth leading to idol worship played out at its peak during the First Temple era [רבנו בחיי].
When the people turn away, their actions deeply damage their relationship with God. The primary approach among commentators is that their behavior is an act of angering Him [רש״י, ביאור יש״ר, ברכת אשר]. Others interpret this reaction as a display of profound disrespect, lightheadedness, disgust, and contempt toward God [הכתב והקבלה, ביאור שטיינזלץ]. This contempt is not merely passive. It involves an active effort to remove the Divine Presence from Israel, demonstrated by bringing idols into holy spaces and shutting down places of learning to prevent Torah study [העמק דבר].
The betrayal reaches its climax in the breaking of the covenant. This creates a double offense: beyond merely worshiping idols, the people actively seek to completely sever their relationship with God and escape His supervision, preferring instead to place themselves under the blind rule of nature and the stars [מלבי״ם, העמק דבר].