When you are in the temple, remember that you are in the living presence of the Lord God, that you stand before His face, before His eyes, in the living presence of the Mother of God, of the holy angels, and of the first-born of the Church – that is, our forefathers, the prophets, Apostles, hierarchs, martyrs, reverend Fathers, the righteous, and all the saints.
Always have the remembrance and consciousness of this when you are in the temple, and stand with devotion, taking part willingly and with all your heart in the Divine service.
St. John of Kronstadt