Albert Barnes Commentary Matthew 24:40

"Then shall two man be in the field; one is taken, and one is left:" — Matthew 24:40 (ASV)

Then shall two be in the field, etc. The calamity will come suddenly. There will be no escape for those whom it overtakes.

One shall be taken. The word taken may mean, either to be taken away from the danger, i.e., rescued, as Lot was (Luke 17:28–29), or to be taken away by death. Probably the latter is the meaning.