Jeremiah 1:18

A saint is different from a sinner, not because he or she is not tempted in the same way but because he or she is not defeated even by a great assault, while the other is overcome even by a slight temptation. The strength of any good person would not, as we said, be worthy of praise, if the victory was gained without being tempted. Most certainly there is no room for victory where there is no struggle and conflict. "Blessed is the one who endures trial, for when he has stood the test, he will receive the crown of life that God has promised to those who love him." According to the apostle Paul also, "power is made perfect" not in ease and delights but "in weakness." "And behold," says he, "I make you this day a fortified city, an iron pillar and bronze walls, against the whole land, against the kings of Judah, its princes, its priests and the people of the land. They will fight against you; but they shall not prevail against you, for I am with you, says the Lord, to deliver you."

(Verse 18, 19) For I have set you today (or Behold I have made you on this day) as a fortified city, and as an iron column, and as a bronze wall over all the earth: to the kings of Judah, to its princes, and to its priests, and to the people of the land. And they will fight against you, but they will not prevail, for I am with you, says the Lord, to deliver you. The divine word describes why the Prophet should not be afraid. I, he says, have set, or made you today, that is, in the present life, until it is called today, as a very strong city: not as one house, nor a tower, or any walls (Matthew 5); but as every city that is situated on a mountain cannot be hidden. About which it is written: Glorious things are said of you, O city of God (Psalm 86:2). And: I am a strong city, a city that is under attack (Isaiah 27:3). And, in a column, it is said of a pillar of iron, about which the Apostle writes: The pillar and foundation of truth (1 Timothy 3:15). Thus Peter and John, who were considered pillars of the Church, gave the right hand of fellowship to Paul and Barnabas. And not only this, but it is said to be a bronze wall, which is not damaged by rust and does not perish when beaten by rain, but becomes stronger with age. But you are such against kings and princes and people, not of any place, but of the land; those who have earthly wisdom and do not know heavenly things, who have the image of the earth and not of the heavenly. These, he says, will fight against you and will not prevail. Why, I ask? What is the cause of such great strength that neither kings, nor princes, nor priests, nor people can prevail against one? It follows: Because I am with you, says the Lord, to deliver you. If at any time the kings of Judah, who are called confessors, and their princes, and the priests, and the people, namely the bishops and presbyters and deacons, and the lowly and ignoble commoners, should rise up against the holy man, let him have firm faith and cease to fear: for with the help of the Lord, he will prevail.