When we reflect on the Saviour's parable regarding the seed of the word, we see not the seed that fell by the wayside or on rocky ground, but rather that which found fertile soil, yielding a bountiful harvest of a hundred, sixty, or thirtyfold. St. Athanasius the Great expresses that when hidden within the heart, it remains safe from the enemy's grasp and is resilient against the trials of adversity. This seed is firmly planted, and the life-giving shoots of God-pleasing endeavors emerge from it with vitality and vigor. The heart is the most delicate of all members, yet nothing is more trustworthy than that which issues forth from it. When the commandments reside within the heart, their fulfillment is not only desirable but is also most beautiful and compelling.
It is a remarkable achievement to have the commandments concealed within the heart; however, one must understand that this does not occur simply by desire or declaration. The heart is naturally inclined towards passion. Thus, for the heart to turn entirely toward the commandments, a transformation is required—a purging of what does not belong and an introduction of what does. The commandments call for humility, meekness, truthfulness, purity, peacefulness, patience, and more; yet if the heart is filled with pride and vanity, anger and hatred, greed and lust, or strife and complaints, then it is clear that the commandments are not yet embraced within it. As long as these negative emotions prevail, we cannot truly say the commandments dwell within, for if they did, feelings and thoughts contrary to them would not exist.
How, then, can the heart be transformed? Through earnest longing, diligent effort, and patience. It is essential to recognize that while the effort originates from us, the actual transformation is a work of grace. From the moment one resolves to pursue a life pleasing to God, the conscience promptly urges the fulfillment of every commandment—both great and small—demanding engagement from one’s entire being and every capacity relevant to a given commandment. The typical progression is thought, sympathy, desire, and action. Sympathy acts as a bridge to desire, while desire paves the way for action.
Consider a scenario involving a person in need: the conscience urges that individual to offer aid, yet if the heart has not yet experienced the joy inherent in good deeds, it may resist and remain indifferent due to lingering attachments to greed. Lacking sympathy, desire fails to ignite, and without desire, the hands remain idle. Such is the nature of this struggle across all facets of our lives. The heart's inclination is towards pleasure. Until it encounters the sweetness of righteousness, it cannot cultivate sympathy for it. Therefore, even if a person commits to align their actions with the commandments, the heart may not resonate with this intention, thwarting the path to fulfilling those commandments and thereby denying itself the joy found in righteous acts.
What then is the solution? One must initially act in defiance of the heart, adhering to the conscience's demands through the disciplined will, encouraged by God’s grace, much like bending a heated rod to achieve the desired form. St. Macarius the Great emphasizes that those seeking to succeed in good must compel themselves towards each virtuous act, even against their heart’s inclination. He assures us that actions undertaken initially through self-discipline will eventually cultivate a true love for those good deeds, leading the heart to find joy in them.
By practicing this behavior in relation to various commandments encountered throughout life, a person trains the heart to discover joy within them, fostering a genuine affection for the commandments, or more accurately, allowing the commandments to take root in the heart. The more one practices these commandments, the more they become part of the heart's essence, ultimately residing within it completely. Such a person may confidently declare, “In my heart I have hidden all the commandments.”
One may wonder, “Are these solely my efforts, without the presence of grace?” While the efforts are indeed ours, it is the grace that yields the fruit. From the moment of conversion and the reception of baptism or repentance, grace is inherently present; however, it only fully permeates a person’s being and empowers them through their exertions. Once an individual has done their utmost, grace steps in to accomplish what is beyond human capability. The task of implanting a commandment within the heart, such that it becomes part of its fabric, is solely the work of grace. No matter how hard one labors, they cannot achieve this transformation independently.
This distinction between the Christian and the non-believer is vital. Without efforts and actions directed towards fulfilling the commandments, grace will never take root within the heart, leaving it as it was, laden with unholy desires and urges, even if that individual has received baptism and other sacraments. This illustrates the divergence between Christians who engage in rigorous spiritual endeavors and those who do not find it necessary to exert themselves, despite leading upright lives.
The principle governing spiritual life is this: where virtues are absent, grace does not flourish; while one act of virtue alone will not suffice to initiate change. When the commandments have taken such firm hold within the heart that they define its essence, the heart will, in unison with the conscience, demand their fulfillment. What once opposed the conscience will now echo its calls, becoming drawn to the actions dictated by the known commandments.
This is why the prophet proclaimed that he concealed the words of God in his heart to avoid sinning against Him. The heart, as noted by Zigabenus, becomes resistant to wrongdoing. The prophet recognized that the most foolproof pathway to avoiding the transgression of God’s commandments lay in internalizing them, thus urging all to likewise, “If you wish to avoid offending the Lord through sin, hide His commandments in your heart.” Implicit in his message is the recognition that to achieve this, one must adopt the methods validated by the spiritual experiences of those who have worked diligently in this pursuit.