To expose the sheer absurdity and exhausting effort behind idolatry, the prophet traces the creation of an idol backward, from the selection of raw materials to the initial planting of the seed. This backward look reveals a completely natural process, entirely stripped of any divine holiness [שד״ל, רד״ק, מלבי״ם]. The idolater begins by venturing into the forest to cut down cedars, searching for the absolute finest wood for his creation [רד״ק, מצודת דוד]. He also gathers other large, non-fruit-bearing trees, such as the oak, which some identify as a chestnut tree [רד״ק], and another type of wood chosen specifically for its exceptional hardness [שד״ל].
This gathering process involves either the physical reinforcement of the idol or intense personal exertion. Because some of these woods are not as strong as cedar, the craftsman might need to use additional forest wood to reinforce and decorate the statue [רש״י, מצודת דוד]. Alternatively, the focus is on the human effort itself, highlighting how the person labors and strains to carefully select the most suitable materials [רד״ק, שד״ל, שטיינזלץ, אבן עזרא]. A more unique perspective suggests this process involves agricultural manipulation. Idolaters would graft branches of one tree onto a cedar trunk to trigger unnaturally fast growth. They would then present this rapid development to the masses as a divine miracle, falsely proving the idol's supposed power [אהבת יהונתן].
The depth of human labor reaches its peak when the idolater goes beyond merely cutting down existing timber. Instead, he plants a seed or a young sapling [רש״י] in advance, waiting years for it to mature enough to be carved [מצודת דוד, רש״י]. This planted tree is generally understood to be a non-fruit-bearing species that is easy to carve [רד״ק, מצודת ציון], a large tree similar to a cypress [שטיינזלץ], or even a collective term representing an entire planted forest of cedars [מלבי״ם].
Ultimately, it is simply the rain that causes the tree to grow. The primary approach among commentators views this as a direct rejection of any claims that the wood possesses inherent or miraculous holiness, proving instead that it develops through ordinary laws of nature [מלבי״ם]. Furthermore, this highlights a profound theological reality. Even though the person plants the tree with the strict intention of using it for idolatry, God still provides the rain to make it grow. The world follows its natural course, and God allows the laws of nature to function even when humans use them to sin, though the wicked will eventually face judgment for their actions [רד״ק, מצודת דוד]. Another interpretation focuses on the physical expansion of the wood itself rather than the weather, describing how the actual body and trunk of the tree steadily thicken over time [רד״ק, אבן עזרא].