I write these things to warn you
These things [I address to you], my beloved, not that I know any of you to be in such a state; but, as less than any of you, I desire to guard you beforehand, that you fall not upon the hooks of vain doctrine, but that you attain to full assurance in regard to the birth, and passion, and resurrection which took place in the time of the government of Pontius Pilate, being truly and certainly accomplished by Jesus Christ, who is our hope, from which may no one of you ever be turned aside.
Source: Epistle to the Magnesians (New Advent)