20 There flourishes with us the strength of hope and the firmness of faith. Among these very ruins of a decaying world our soul is lifted up, and our courage unshaken: our patience is never anything but joyous; and the mind is always secure of its God, even as the Holy Spirit speaks through the prophet, and exhorts us, strengthening with a heavenly word the firmness of our hope and faith. “The fig-tree,” says He, “shall not bear fruit, and there shall be no blossom in the vines.
The labour of the olive shall fail, and the fields shall yield no meat. The flock shall be cut off from the fold, and there shall be no herd in the stalls. But I will rejoice in the Lord, and I will joy in the God of my salvation.” He says that the man of God and the worshipper of God, depending on the truth of his hope, and Corroded on the steadfastness of his faith, is not moved by the attacks of this world and this life. Although the vine should fail, and the olive deceive, and the field parched with grass dying with drought should wither, what is this to Christians?
What to God's servants whom paradise is inviting, whom all the grace and all the abundance of the kingdom of heaven is waiting for? They always exult in the Lord, and rejoice and are glad in their God; and the evils and adversities of the world they bravely suffer, because they are looking forward to gifts and prosperities to come: for we who have put off our earthly birth, and are now created and regenerated by the Spirit, and no longer live to the world but to God, shall not receive God's gifts and promises until we arrive at the presence of God.
And yet we always ask for the repulse of enemies, and for obtaining showers, and either for the removal or the moderating of adversity; and we pour forth our prayers, and, propitiating and appeasing God, we entreat constantly and urgently, day and night, for your peace and salvation.
Source: The Treatises of Cyprian (New Advent)