Hello there and welcome to this forum.
The Sermon you refer to by Johnathon Edwards, of 1741, of a Puritan, is balanced and appropriate, then and today, in the sense of the message he wanted to convey to his congregation, in very strong terms. The title is appropriate, that true sinners are not being saved then and today. he wanted to awaken them, even those in his midst.
The last words I read of his sermon summarize it well...
"Therefore, let every one that is out of Christ, now awake and fly from the wrath to come. The wrath of Almighty God is now undoubtedly hanging over a great part of this congregation. Let every one fly out of Sodom: “Haste and escape for your lives, look not behind you, escape to the mountain, lest you be consumed.”"
