When they are saying, “Peace and security,” it is then that sudden destruction will (ephistatai | ἐφίσταται | pres mid ind 3 sg) come (ephistatai | ἐφίσταται | pres mid ind 3 sg) upon them, like labor pains upon a woman with child, and they will not escape.
Reference
1 Thessalonians 5:3
Sequence
19