THE CREDAL. “I BELIEVE.” RUFINUS: “I believe,” therefore, is placed in the forefront [of the Apostles’ Creed], as the apostle Paul, writing to the Hebrews, says, “The one who comes to God must first of all believe that he is, and that he rewards those who believe on him.” The prophet also says, “Unless you believe, you shall not understand.” In order that the way to understand, therefore, may be open to you, you do the right thing in first of all professing that you believe. For no one embarks upon the sea and trusts himself to the deep and liquid element unless he first believes it is possible that he will have a safe voyage. The farmer does not commit his seed to the furrows and scatter his grain on the earth unless he believes that the showers will come together with the sun’s warmth, 
through whose fostering influence, aided by favorable winds, the earth will produce and multiply and ripen its fruits. In essence, nothing in life can be transacted if there is not first a readiness to believe.
Is it any wonder then that when we come to God, we first of all profess that we believe, seeing that, without this, not even common life can be lived? We have premised these remarks at the outset, since the pagans are wont to object to us that our religion, because it lacks reasons, rests solely on belief. We have shown, therefore, that nothing can possibly be done or remain stable unless it is preceded by belief. Finally, marriages are contracted in the belief that children will be born; and children are committed to the care of teachers in the belief that the teaching of these teachers will be transferred to the pupils. In the same way, one person assumes the emblems of empire, believing that peoples and cities and a well-equipped army also will obey him. But if no one enters upon any one of these several undertakings except in the belief that the results spoken of will follow, must not belief be much more requisite if one would come to the knowledge of God? COMMENTARY ON THE APOSTLES’ CREED 3.
Rufinus of Aquileia (c. 345-411) Easter Church Father
Oden, Thomas, General Editor Ancient Christian Commentary on Scripture: New Testament X: Hebrews 179-180