For this reason while you approach, do not think that you partake of the Divine Body from a man; rather, believe that you partake of the Divine Body from the very Seraphim with the fiery spoon that Isaiah saw; and when we partake of the Saving Blood, let us believe that our lips touch the very Divine and Immaculate Side. Therefore, for this reason my brethren, let us not be absent from the churches, and inside them let us no longer occupy our time in conversations. Let us stand with fear and trembling, with our eyes lowered and the soul elevated, with silent sighs and loud shouts of the heart.

Homily 9: On Repentance and About those who have Forsaken the Assemblies, and About the Sacred Table and Judgement (Pg. 128)