they are the ones who, when they have heard the word,
embrace it with a generous and good heart,
and bear fruit through perseverance.”
To obey (from the Latin ob-audire, to "hear or listen to") in faith is to submit freely to the word that has been heard, because its truth is guaranteed by God, who is Truth itself. Abraham is the model of such obedience offered us by Sacred Scripture. The Virgin Mary is its most perfect embodiment.
-- CCC 144