Why did abraham Lincoln write the "House Divided" speech? What message was he hoping to send?

In 1858 Abraham Lincoln delivered one of the most important addresses in U. S. history, his "House Divided" speech, when he accepted the Illinois Republican nomination for Senate. The speech marked his entrance into national politics at a time when the nation was profoundly at odds over slavery

He was hoping to send a message to the country how the country is divided between this conflict of slavery. Abraham Lincoln's speech focuses on the issue of slavery in the United States. He treats the country as a divided house over the issue. The speaker dreams of a country where every person will be free.