John Knox was a fiery preacher who lived in Scotland during the heat of the Protestant Reformation. He loved the doctrine of justification by faith alone, and fought for it until his dying day.
He was opposed on many fronts. One such detractor was Mary, Queen of Scots, who supported the Catholics. Mary discerned his godliness. She is reputed to have said: “I fear the prayers of John Knox more than all the assembled armies of Europe.”
Does anyone say this about your prayers?