For in the first place, such care was commanded from the outset. Christ has promised that His truth shall continue and shall prevail. But He has not exempted Christians from the duty of preserving and propagating it. He, Who is the Truth, has declared that He is ever with His Church, even unto the end of the world (Matt. xxviii. 20); and in fulfilment of this promise He has bestowed the Spirit of truth upon it. But He has nowhere hinted that His Church is to leave the cause of His Gospel to take care of itself. On the contrary, at the very time that He promised to be alway with His disciples, He prefaced this promise with the command, "Go ye therefore, and make disciples of all the nations, ... teaching them to observe all things whatsoever I commanded you;" as if His promise were contingent upon their fulfilment of this charge. At the very moment when the Church received the truth, it was told that it had the responsibility of safeguarding it and making it known. And, secondly, experience has proved how entirely necessary such care is. The Gospel cannot be superseded by any announcement possessing a larger measure of truth and authority. So far as the present dispensation goes, its claims are absolute and final. But it may be seriously misunderstood; it may be corrupted by large admixture of error; it may be partially or even totally forgotten; it may be supplanted by some meretricious counterfeit. There were Thessalonians who had supposed that the Gospel exempted them from the obligation of working to earn their bread. There were Christians at Corinth and Ephesus who had confounded the liberty of the Gospel with antinomian license. There was the Church of Sardis which had so completely forgotten what it had received, that no works of its doing were found fulfilled before God, and the remnant of truth and life which survived was ready to perish. And the Churches of Galatia had been in danger of casting on one side the glories of the Gospel and returning to the bondage of the Law. Through ignorance, through neglect, through wilful misrepresentation or interested opposition, the truth might be obscured, or depraved, or defeated; and there were few places where such disastrous results were more possible than at Ephesus. Its restless activity in commerce and speculation; its worldliness; the seductiveness of its forms of paganism;--all these constituted an atmosphere in which Christian truth, unless carefully protected, would be likely to become tainted or be ignored. Even without taking into account the proposal that Timothy should leave Ephesus for awhile and visit the Apostle in his imprisonment at Rome, it was no more than necessary precaution that he should endeavour to secure the establishment of a permanent centre for preserving and handing on in its integrity the faith once for all committed to the saints.