One of the titles given to the Lord in the book of Revelation is the ‘Amen’.
We read “These things saith the Amen, the faithful and true witness”. (Revelation 3:14)
Elder Holland taught: “This Hebrew word—literally translated as “firm” or “faithful”—means “let it be as has been said.” It is most often found as a benediction uttered at the end of a prayer, confirming the words that have been uttered or invoking the fulfillment of them. As such, it is a one-word affirmation of what has been spoken or done or promised. As a title for Jesus Christ, it means that every word He has uttered will be fulfilled and every promise He has made will be kept. Through Him the purposes of God will be firmly and faithfully realized.”
We read in Abraham 3:17: “There is nothing that the Lord thy God shall take in his heart to do but what he will do it.” Also from D&C 3:2: “For God doth not walk in crooked paths, neither doth he turn to the right hand nor to the left, neither doth he vary from that which he hath said”.
As we look to Christ, the Amen, as our example, we too, can be a ‘faithful and true witness’. We can let our words have authenticity, weight and meaning. If we say we will do something, we can make sure that we do it. We can keep the promises that we make to God, to others and to ourselves.
Sources:
Jeffrey R. Holland, Witness for His Names, Deseret Book 2019