Gospel (2098) means sanctification too

"Gospel" also represents the Word of God that sanctifies, not just that part of the message that saves people from hell. I don't bother to make a complex reasoning for it, because it's right here in the definition!

From the Blue Letter Bible's (an online bible study resource) lexicon for strong's concordance #2098:

5) as the messianic rank of Jesus was proved by his words, his deeds, and his death, the narrative of the sayings, deeds, and death of Jesus Christ came to be called the gospel or glad tidings.

May I show you all of what "gospel" means in the greek? There are two variations of this word...

2097 --
1) to bring good news, to announce glad tidings
a) used in the OT of any kind of good news
- of the joyful tidings of God's kindness, in particular, of the Messianic blessings
b) in the NT used especially of the glad tidings of the coming kingdom of God, and of the salvation to be obtained in it through Christ, and of what relates to this salvation
c) glad tidings are brought to one, one has glad tidings proclaimed to him
d) to proclaim glad tidings
- instruct (men) concerning the things that pertain to Christian salvation

2098 --
1) a reward for good tidings

2) good tidings
a) the glad tidings of the kingdom of God soon to be set up, and subsequently also of Jesus the Messiah, the founder of this kingdom. After the death of Christ, the term comprises also the preaching of (concerning) Jesus Christ as having suffered death on the cross to procure eternal salvation for the men in the kingdom of God, but as restored to life and exalted to the right hand of God in heaven, thence to return in majesty to consummate the kingdom of God
b) the glad tidings of salvation through Christ
c) the proclamation of the grace of God manifest and pledged in Christ
d) the gospel
e) as the messianic rank of Jesus was proved by his words, his deeds, and his death, the narrative of the sayings, deeds, and death of Jesus Christ came to be called the gospel or glad tidings

What's more,
2097 -- a verb
2098 -- a noun

That's it, that's all I wanted to bring your attention to.