A.T. Robertson Commentary Luke 21:26

"men fainting for fear, and for expectation of the things which are coming on the world: for the powers of the heavens shall be shaken." — Luke 21:26 (ASV)

Men fainting (αποψυχοντων ανθρωπων). Genitive absolute of αποψυχω, to expire, to breathe off or out. Old word. Here only in N.T.

Expectation (προσδοκιας). Old word from προσδοκαω, to look for or towards. In the N.T. only here and Ac 12:11.

The world (τη οικουμενη). Dative case, "the inhabited" (earth, γη).