An idea in man is first impressed upon him and afterwards expressed in things, but in God it is only expressed, not impressed, because it does not come from anywhere else.
The first act of religion, therefore, concerns those things which are communicated to us from God. The other concerns those things which we yield to God.
Faith is the virtue by which, clinging-to the faithfulness of God, we lean upon him, so that we may obtain what he gives to us.
Although the whole man partakes of this grace, it is first and most appropriately in the soul and later progresses to the body, inasmuch as the body of the man is capable of the same obedience to the will of God as the soul.