Ba'at means to kick, especially in the sense of an animal kicking against a goad or restraint. Figuratively, it describes contemptuous rejection or scornful treatment of something sacred. The word conveys violent, rebellious resistance — not mere disagreement but physical disdain.
God accuses Eli's household of kicking at his sacrifices and offerings (1 Samuel 2:29) — treating the sacred with contempt by seizing the best portions for themselves. The image of kicking recalls a stubborn ox refusing the goad, a picture of rebellion against divine authority. Deuteronomy 32:15 uses the same verb for Jeshurun (Israel) who grew fat and kicked — prosperity leading to forgetfulness of God. This pattern of blessing producing complacency and then rebellion recurs throughout Israel's history.