But the most important task that Luther now undertook, and in which he persevered with steadfast devotion during his further stay at the Wartburg, was one of a peaceful character, the most beautiful fruit of his seclusion, the noblest gift that he has bequeathed to his countrymen. This was his translation of the Bible--first of the New Testament. 'Our brethren demand it of me,' he wrote to Lange shortly after his return from Wittenberg. And in these words the wish was evidently expressed, or else laid to heart anew. The Bible, it is true, had been translated into German before Luther's time, but in a clumsy idiom that sounded foreign to the people, and not, like Luther's version, from the original text, but from the Latin translation used in the churches. Luther declared that no one could speak German of this outlandish kind, 'but,' he said, 'one has to ask the mother in her home, the children in the street, the common man in the market-place, and look at their mouths to see how they speak, and thence interpret it to oneself, and so make them understand. I have often laboured to do this, but have not always succeeded or hit the meaning.' None the less strictly and faithfully did he seek to adhere to the spirit of the text, and, where necessary, even to the letter. Such an interpretation, he said, required a 'truly devout, faithful, diligent, fearful, Christian, learned, experienced, and practised heart.' Penetrated himself with the substance and spirit of the Scriptures, he understood how to combine in his language, as if by intuition, a dignified tone and a national character. So hard did he work, that he finished the New Testament at the Wartburg in a few months; he then wished to revise it with the help of Melancthon.