The beginning of Solomon’s reign is marked by a complex duality. On one hand, he demonstrated a deep and pure devotion to God. On the other hand, a subtle spiritual flaw existed regarding how and where sacrifices were offered. Solomon's complete service to the Creator operated on two distinct levels. Internally, his heart achieved perfection through true faith, complete trust in God, and kindness toward others. Practically, he followed his father David's path by fulfilling the commandments of the Torah and performing upright actions [אברבנאל].
The length of this period of pure devotion is a matter of debate, largely centering on Solomon's marriage to the daughter of Pharaoh. One perspective views this marriage, which occurred around the fourth year of his reign just before the building of the Temple, as a breaking point that awakened divine anger. According to this view, Solomon's flawless love for God only lasted during those initial four years [רש״י]. Another perspective argues that Pharaoh's daughter was properly converted to the religion of Israel, meaning Solomon's pure love for God remained untainted during this era. According to this approach, Solomon's eventual spiritual decline did not stem from this marriage, but rather occurred much later in his old age when he married many foreign women and allowed them to worship other gods [רד״ק].
Against the backdrop of Solomon's spiritual perfection, a significant reservation emerges regarding his practice of offering sacrifices at various high places. This was the single area where Solomon strayed from the path of his father [מצודת דוד]. Strictly speaking, offering sacrifices at high places was entirely permitted by law at that time, as the Temple had not yet been built [רד״ק, ביאור שטיינזלץ]. Nevertheless, the primary approach among commentators is that Solomon's actions carry an underlying criticism, rooted in two main issues.
The first issue involves the nature of the sacrifices. While David was careful to offer sacrifices exclusively at the large, central high place in Gibeon or before the Ark of the Covenant in Jerusalem, Solomon acted like the general public and offered sacrifices at numerous different high places [אברבנאל, מלבי״ם]. Multiplying these places of worship posed a severe spiritual danger. It closely mimicked the pagan practice of building altars on every mountain and under every leafy tree, a habit that could easily lead the people toward idolatry [רד״ק, אברבנאל].
The second reason for criticism focuses on Solomon's delay. He waited four years before beginning the construction of the Temple, thereby allowing the problematic practice of scattered, decentralized sacrifices to continue [רש״י, ביאור שטיינזלץ]. To repair the spiritual gap that had formed between himself and the nation, it was essential for Solomon to build the Temple and bring a complete end to the practice of sacrificing at high places [מלבי״ם].