What does Judges 14:3 mean?
Samson wants to take a Philistine woman as his wife. In that era this required his parents to make the arrangements. He demanded they do so almost immediately after seeing the woman (Judges 14:1–2). This impulsive desire is a problem for several reasons. First and foremost, God had forbidden His people from marrying non-Israelites in and around the land of Canaan (Deuteronomy 7:1–5). This restriction named specific cultures but was not a matter of ethnicity. Rather, it was a question of faith: to avoid being drawn into idol worship and the depravity that came with it (Exodus 34:15–16).Second, Samson had been specially chosen by God to begin rescuing Israel from their Philistine oppressors (Judges 13:5). Marrying a Philistine woman was like making an alliance with the enemy instead of resisting them. Choosing to marry an enemy of Israel was direct rebellion against God's will, including God's presumed plans for Samson. As it happens, God plans to use this rebellious streak to weaken Philistine control (Judges 14:4).
Instead of refusing this request outright, Samson's parents appeal to him. They only hint at the real problem by suggesting he find a wife from his own people. Referring to "uncircumcised Philistines" hints at the spiritual distinction between the two groups. At God's decree, male Israelite babies were to be circumcised as infants in acknowledgement of the covenant between God and Israel (Genesis 17:9–14). Other nations of the region practiced circumcision, as well. The Philistines, though, did not circumcise their boys. At the same time, Samson's parents seem to suggest that Philistines were lower class people because they did not practice circumcision. They'd prefer their son not take a woman from an unworthy group. As phrased, their complaint is less about God's law, or Samson's mission, and more about disdain for the Philistine people in general.
Scripture gives almost no details about Samson's upbringing. His attitude here—what I want is what I will get—is tragically flawed for someone supposedly set apart for service to God. For all their early obedience (Judges 13), Samson's parents take a careless approach to this issue. It's possible—but not certain—that this style of upbringing contributed to Samson's unspiritual nature and lack of self-control (Judges 14:9, 19; 16:1, 4). The only direct explanation given is that God is using Samson's own flaws to weaken Philistine control over the people (Judges 14:4).