The Gentiles’ error was different from the hypocrites’ but came from the same diseased root. The hypocrite had the wrong audience; the pagan had the wrong God. The word Jesus uses for their babbling describes a noisy flow of sound without meaning, and Craig Blomberg observes that this is the prayer of those who imagine God as distant, distracted, or reluctant, a deity who must be wrestled into attention by sheer accumulation of words. The prophets of Baal on Mount Carmel in 1 Kings 18 show us where that road ends: louder voices, deeper cuts, and a silence that never breaks.
Christians fall into this trap too, often without realizing it. We do not chant the names of pagan gods, but we sometimes pray longer because we suspect God is not really listening, or we repeat the same phrases because we believe the repetition might add power, or we secretly fear that we have not done enough this week to earn an audience. Underneath it all is a quiet assumption that God is reluctant and we must be persistent enough to break His indifference.
Jesus cuts through it with one line: your Father knows what you need before you ask Him. He is not distracted. He is not asleep. He is not negotiating. The very God you are tempted to manipulate already loves you with an everlasting love and already knows the exact shape of your need. Prayer is not informing Him. Prayer is the expression of a relationship He already initiated.