He exists—but what does that mean?

It is worth clarifying that we never encounter Israelites (individually or collectively) denying his [Yahweh] existence or alternatively acknowledging his existence but then consciously rejecting his divine authority. Instead, we have plenty of examples of a syncretistic blending of Israelite and Canaanite “religion.” This religious syncretism is quite evident at a number of places, not least in the example of Gideon’s patriarchal household and in Gideon himself. Gideon’s father maintained a shrine to Baal and Ashtoreth (6:25–32), and yet his father must have passed down something of the tradition and history of Israel because Gideon recalls some of them (6:13). Gideon himself rightly acknowledges the rule of Yahweh but then immediately fashions an idol and sets up a shrine that “all Israel whored after” and that “became a snare to Gideon and to his family.” When it comes to dividing divine loyalties, like father, like son. Indeed, according to the pervasive polytheistic cognitive environment of the ancient Near East, paying homage to Yahweh and also serving the local deities would be the most natural thing for the Israelites to do. And yet, Yahweh was unique among the gods of the nations and by virtue of his special relationship with them and his redemptive and preserving deeds on their behalf, Israel was called to be a unique people. Accordingly, there was to be no division of loyalties—service to foreign gods is implicitly a rejection of Yahweh.—David J. H. Beldman, Judges, Two Horizons Old Testament Commentary (Grand Rapids: Eerdmans, forthcoming)