And this word is the good news that was preached to you. (1 Peter 1:25b ESV)
What word? The word through whom God spoke and everything that is came to be (Genesis 1:1-25). The word that was spoken from the fire on the mountain (Exodus 19:21-20:1). The prophetic word: You are the man! bringing conviction of sin unto repentance (see 2 Samuel 12:7 CSB). The one to whom the Lord God gave the tongue of one who was instructed to know how to sustain the weary with a word (Isaiah 50:4). The word that refuses to return to God empty, but accomplishes all that he pleases (see Isa. 50:11). The word that is a lamp unto my feet and a light unto my path (see Psalm 119). The Word through whom all things were made that were made and who became flesh and dwelt among us (see John 1).
And in the context of Peter’s letter (1:22-25), this word is the truth through which we are purified by our obedience to it. It is the living and abiding word of God, through whom one is born again unto new life in the Spirit. Though the things of this world will fade away, the word of the Lord remains forever. This word is the good news that was preached to you.
Have you believed? Have you been born again? There is one name under heaven given among men and women by which we must be saved: Jesus. Call on the name of the Lord and be saved. Jesus says to come unto him and find rest. Do not be ashamed of the gospel, the good news, for it is the power of God unto salvation for all who believe. (See Matt. 11; Acts 2, 4; Romans 1; 10) For the Scripture says, Everyone who believes on him will not be put to shame, since there is no distinction between Jew and Greek, because the same Lord of all richly blesses all who call on him. For everyone who calls on the name of the Lord will be saved. (Romans 10:11-13)