There will be a rapture, leaving God once again to deal with the Jews during 'Jacob's Trouble'.
Jeremiah 30:7 (KJV) Alas! for that day is great, so that none is like it: it is even the time of Jacob's trouble; but he shall be saved out of it.
Children, If I had to take a guess, would be sanctified by their believing parents. 1Cor 7:14...but I wouldn't be dogmatic about that.