Two of them will perish when the middle time approaches. Four will be kept for a while until the time of the ending of it will approach; but two will be kept to the end.
KJV
2 Esdras 12:21
And two of them shall perish, the middle time approaching: four shall be kept until their end begin to approach: but two shall be kept unto the end.
Parallel Translations
But when the midde time cometh, there shalbe foure kept a time, whiles his time beginneth to come, that it maye be ended, but two shalbe kept vnto the end.