'Simultaneously' in the Bible

So when I planned this, was I irresponsible? Or what I plan, do I plan in a purely human way so that I say “Yes, yes” and “No, no” simultaneously?

Then we who are alive and remain [on the earth] will simultaneously be caught up (raptured) together with them [the resurrected ones] in the clouds to meet the Lord in the air, and so we will always be with the Lord!

Does a spring send out from the same opening both fresh and bitter water?