Without exalting myself to the rank of teacher, nonetheless, fulfilling my duty and obligation as an obedient servant for the benefit of my neighbor, I will speak my mind, founded on the commandments of Holy Scripture, to those who thirst and seek for their eternal heavenly homeland.
A true Christian is made by faith and love of Christ. Our sins do not in the least hinder our Christianity, according to the word of the Savior Himself. He said: I am not come to call the righteous, but sinners to repentance; there is more joy in heaven over one who repents than over ninety and nine just ones. Likewise concerning the sinful woman who touched His feet, He said to the Pharisee Simon: to one who has love, a great debt is forgiven, but from one who has no love, even a small debt will be demanded. From these judgements a Christian should bring himself to hope and joy, and not in the least accept the torment of despair. Here one needs the shield of faith.
Sin, to one who loves God, is nothing other than an arrow from the enemy in battle. The true Christian is a warrior fighting his way through the regiments of the unseen enemy to his heavenly homeland. According to the word of the Apostle, our homeland is in heaven; and about the warrior he says: we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places (Eph.6: 12)].
The vain desires of this world separate us from our homeland; love of them and habit clothe our soul as if in a hideous garment. This is called by the Apostles the outward man. We, traveling on the journey of this life and calling on God to help us, ought to be divesting ourselves of this hideous garment and clothing ourselves in new desires, in a new love of the age to come, and thereby to receive knowledge of how near or how far we are from our heavenly homeland. But it is not possible to do this quickly; rather one must follow the example of sick people, who, wishing the desired health, do not leave off seeking means to cure themselves.
(From a Letter of June 20, 1820)