The Lord called Himself and is the 'good Shepherd' (Jn. 10:11). If you believe in His guidance, then you will understand by your heart that as a zealous shepherd when feeding his flock does not allow the sheep to disperse, but gathers them together, so also the Lord pastures our souls, not allowing them to wander in falsehood and sins, but gathering them on the path of virtue, and not allowing the mental wolf to steal and scatter them.
John of KronstadtDo not despise any man, however poor he may be; but behave with full respect and kindness to every well-intentioned man, especially to the poor, as to our members worthy of compassion - or, rather, to members of Christ - otherwise you will cruelly wound your soul.
John of KronstadtAvoid duplicity, that is, do not let your heart be divided between attachment to God and attachment to earthly things, 'You cannot serve God and mammon' (Mt. 6:24); cling to God alone, put your trust in Him alone; for the Devil, by inciting us to duplicity, seeks himself to gain possession of our heart, which is single and indivisible.
John of KronstadtAs the Holy Trinity, our God is One Being, although Three Persons, so, likewise, we ourselves must be one. As our God is indivisible, we also must be indivisible, as though we were one man, one mind, one will, one heart, one goodness, without the smallest admixture of malice - in a word, one pure love, as God is Love. That they may be one, even as We are One (John 17:22).
John of KronstadtThe heart is refined, spiritual, and heavenly by nature - guard it; do not overburden it, do not make it earthly, be temperate to the utmost in food and drink, and in general in bodily pleasures. The heart is the temple of God. 'If any man defile the temple of God, him shall God destroy' (I Cor. 3:17).
John of KronstadtHe who is accustomed to give account of his life at confession here will not fear to give an answer at the terrible judgment-seat of Christ. It is for this purpose that the mild tribunal of penitence was here initiated, in order that we, being cleansed and amended through penitence here below, may give an answer without shame at the terrible judgment-seat of Christ.
John of Kronstadt