Docrine and Covenants 100:5-8
5 Therefore, verily I say unto you, lift up your voices unto this people; speak the thoughts that I shall put into your hearts, and you shall not be confounded before men;
6 For it shall be given you in the very hour, yea, in the very moment, what ye shall say.
7 But a commandment I give unto you, that ye shall declare whatsoever thing ye declare in my name, in solemnity of heart, in the spirit of meekness, in all things.
8 And I give unto you this promise, that inasmuch as ye do this the Holy Ghost shall be shed forth in bearing record unto all things whatsoever ye shall say.