John 16

Speaking of the people of His day, the Savior warned His disciples -

"They shall put you out of the synagogues: yea, the time cometh, that whosoever killeth you will think that he doeth God service." (New Testament | John 16:2)

I find it interesting that the religious leaders of the Savior's day would persecute His disciples, ironically thinking that they are serving God by doing so. I'm sure there are religious leaders of our day that ironically persecute the saints on the same premises. That is thinking they are doing service to God. The Savior provided this explanation why -

"...these things will they do unto you, because they have not known the Father, nor me." (New Testament | John 16:3)

I am personally convinced the reason is more an issue of power, pride, and position than anything else. So how are the saints to come to know the Father and the Son, or in other words, come to know the truth of whom they worship. The Savior knew that He would not always be with them so He provided "another Comforter" for -

"...when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come." (New Testament | John 16:13)

To be one the "shall hear" requires a great deal of humility and desire to know the truth. Moroni gave this inspired promise if one really wants to know the truth of all things -

"...I would exhort you that when ye shall read these things, if it be wisdom in God that ye should read them, that ye would remember how merciful the Lord hath been unto the children of men, from the creation of Adam even down until the time that ye shall receive these things, and ponder it in your hearts.
4 And when ye shall receive these things, I would exhort you that ye would ask God, the Eternal Father, in the name of Christ, if these things are not true; and if ye shall ask with a sincere heart, with real intent, having faith in Christ, he will manifest the truth of it unto you, by the power of the Holy Ghost.
5 And by the power of the Holy Ghost ye may know the truth of all things." (Book of Mormon | Moroni 10:3 - 5)

Those that follow this counsel are those that "shall hear". By failing to do so, one might find himself amongst those that -

"...will think that he doeth God service." (New Testament | John 16:2)