Mark 13:15-19

Let the one who is on the housetop not go down, nor enter his house, to take anything out, and let the one who is in the field not turn back to take his cloak. And alas for women who are pregnant and for those who are nursing infants in those days! Pray that it may not happen in winter. For in those days there will be such tribulation as has not been from the beginning of the creation that God created until now, and never will be.