Jamieson, Fausset and Brown on Ezekiel 5:2

2. Three classes are described. The sword was to destroy one third of the people; famine and plague another third ("fire" in Eze 5:2 being explained in Eze 5:12 to mean pestilence and famine); that which remained was to be scattered among the nations. A few only of the last portion were to escape, symbolized by the hairs bound in Ezekiel's skirts (Eze 5:3; Jr 40:6; 52:16). Even of these some were to be thrown into the fiery ordeal again (Eze 5:4; Jr 41:1, 2, &c.; Jr 44:14, &c.). The "skirts" being able to contain but few express that extreme limit to which God's goodness can reach.