Preaching by Heywood

Nor was he scant and short in his sermons, but usually long, two hours at least, often three, yea, sometimes he would even continue four or five hours, praying and preaching; his heart was so set on his master's work, that he forgot his own strength and his hearers' patience. Nor did he tediously dream over his work, but was full of zeal, vigour, tenderness and affection, often strained his voice beyond what his natural strength could well bear, which occasioned torturing and mortal disease. Like a candle he spent himself to give others light.
said of Nathaniel Heywood