'Heart Is Troubled' in the Bible

My heart is troubled, and resteth not; Days of affliction are come upon me.

Behold, O Jehovah; for I am in distress; my heart is troubled; My heart is turned within me; for I have grievously rebelled: Abroad the sword bereaveth, at home there is as death.

Mine eyes do fail with tears, my heart is troubled; My liver is poured upon the earth, because of the destruction of the daughter of my people, Because the young children and the sucklings swoon in the streets of the city.