Cover a man who stumbles, so long as your receive no harm from him, and give him encouragement; then your Master’s lovingkindness will bear you up. Support with a word the infirm, and those who are grieved at heart, in so far as this lies within your hands, then the Right Hand that sustains all will also sustain you. Through the toil of prayer and the anguish of your heart commune with those who are grieved of heart, and the Source of mercy will be opened to your petitions.

The Ascetical Homilies of Saint Isaac the Syrian

Homily Two : On Thankfulness to God, In Which There Are Also Essential Elementary Lessons