TURE DOCTRINE
The question is NOT whether a doctrine is beautiful or if it is convinced in sincerity. It is whether it is TRUE.
To know the only part of the truth can be misleading, even dangerous. Many things we hear , particularly in respect to religion, are only a small portion of the whole story, even though they may sound complete and substantial to us. Therefore, everyone should actually make the efforts to establish the whole truth, especially in spiritual matters.
The following illustration may demonstrate this.
A farmer confessed, under oath without flinching, that he had stolen a rope. He was not lying but neither was he telling to the whole truth- for on the end of that rope was the cow that he was accused of stealing!
Although Quran gives hints to many biblical stories, we should encourage Muslims to read the Bible to get the whole truth.