"strong, mighty, powerful, able (to do)," in its neuter form signifies "possible," Matthew 19:26; 24:24; 26:39; Mark 9:23; 10:27; 13:22; 14:35,36; Luke 18:27; Acts 2:24; 20:16 (27:39, in some mss.; dunamai, "to be able," in the most authentic, RV, "they could"); Romans 12:18; Galatians 4:15 . See ABLE.
"to be," is used in the third person singular, impersonally, with the meaning "it is possible," negatively in 1 Corinthians 11:20 , RV, (AV, "it is not"), and Hebrews 9:5 , "we cannot," lit., "it is not possible."
Note: For Hebrews 10:4 , AV, "it is not possible," see IMPOSSIBLE.