Jubal Early's army was a threat to the North because they made a raid and were about to take Washington D.C.
Jubal Anderson Early (1816 - 1894) was a military leader of the American Confederacy noted for being an opponent of secession. Nonetheless, he supported his home state Virginia once the War began.
When he joined the army he had the position of Colonel and participated in the battles of:
First and second battle of Bull Run
Battle of Antietam
Battle of Fredericksburg
Battle of Chancellorsville
Battle of Gettysburg.
Battle of the Wilds
Battle of Spotsylvania
Early stood out for commanding the Confederate forces towards the Shenandoah Valley in 1864. In this dispute they were a great threat to the Union because they were about to take Washington DC, but were defeated by Union troops commanded by Philip Sheridan.
Isagogics is the branch of theology that is focused on studying the history that surrounds the events described in the Bible. This is done in order to understand under what environment the characters involved in the Bible were living.