Speaking the word includes what you have become, not just what you say

What would it be like to have the spirit flow into and through you at all times and in everything you do? God has given a tremendous promise to all who will declare what they declare in his name in solemnity of heart and in meekness:

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. (D&C 100)

To declare does not just mean to speak. The Hebrew definitions of words translated as testify and declare also mean to demonstrate, and the Lord explicitly defined what you say as your desires, thoughts, and actions.¹

What you say and do should align fully with what you feel and believe. When what you feel, think, and do are fully aligned with each other, you maximize the conduit through which the light of God can flow in and through you. To the extent your feelings, thoughts, or actions are out of alignment with one another, you can be assured that you are experiencing less than the full measure of joy, peace, and growth that God wants for you.²

During his mortal life, the Lord walked in the full power of the spirit because everything he said, did, and felt was the full measure of his sincere belief of what the Father would do in his place, based on everything he had learned about him.³

To speak the words of eternal life is to seek, know, and do what the Lord would in your place. He calls us to learn and live his purpose, just as he learned and lived the Father’s purpose.⁴