all at once

Strong’s Dictionary of Greek Words:

Number:
3826 (find all occurrences in KJV Bible)
Greek:
παμπληθεί
Transliteration:
pamplethei
Phonic:
pam-play-thi’
Meaning:
dative case (adverb) of a compound of 3956 and 4128; in full multitude, i.e. concertedly or simultaneously
KJV Usage:
all at once