...if you wish to get pure air into your room, or if you go for a walk in the fresh air, think of the pure and of the unclean heart. Many of us like to have pure air in the room (and this is an excellent habit), or are fond of walking in the fresh air, but they do not even think of the necessity of the purity of the spirit or heart (of, so to say, spiritual air, the breath of life); and, living in the fresh air, they allow themselves to indulge in impure thoughts, impure movements of the heart, and even impurity of language, and most impure carnal actions.
John of KronstadtDo not be despondent when fighting against the incorporeal enemy, but even in the midst of your afflictions and oppression praise the Lord, Who has found you worthy to suffer for Him, by struggling against the subtlety of the serpent, and to be wounded for Him at every hour; for had you not lived piously, and endeavored to become united to God, the enemy would not have attacked and tormented you.
John of KronstadtWorthless is the charity of the man who bestows it unwillingly, because material charity is not his, but God's gift, while only the disposition of the heart belongs to the man. This is why many charities prove almost worthless, for they were bestowed unwillingly, grudgingly, without respect for the person of our neighbor. So also the hospitality of many persons proves worthless because of their hypocritical vain-glorious behavior to their guests. Let us offer our sacrifices upon the altar of love to our neighbor, with heart-felt affection: 'for God loves a cheerful giver'
John of KronstadtThe longer we remain without confessing, the worse it is for us, the more entangled we become in the bonds of sin, and therefore the more difficult it is to give an account.
John of KronstadtHow can it be other than right to worship the Body of the Lord, all-holy and all-reverend as it is, announced as it was by the archangel Gabriel, formed by the Holy Spirit, and made the Vesture of the Word? It was at any rate a bodily hand that the Word stretched out to raise her that was sick of a fever (Mk. 1:31): a human voice that He uttered to raise Lazarus - the dead (Jn. 11:43); and, once again, stretching out His hands upon the Cross, He overthrew the prince of the power of the air, that now works (Eph. 2:2) in the sons of disobedience, and made the way clear for us into the heavens.
John of Kronstadt