'Churning' in the Bible

ר ReshLord, see how I am in distress.I am churning within;my heart is broken,for I have been very rebellious.Outside, the sword takes the children;inside, there is death.

כ KafMy eyes are worn out from weeping;I am churning within.My heart is poured out in griefbecause of the destruction of my dear people,because children and infants faintin the streets of the city.