behest (n.)

"bidding, command," Old English hæs "bidding, behest, command," from Proto-Germanic *hait-ti-, from *haitan "to call, name" (see behest). With unetymological -t added in Middle English on model of other pairings (compare wist/wesan, also whilst, amongst, etc.; see amidst).

"named, called" (archaic), from levelled past participle of Middle English highte, from Old English hatte "I am called" (passive of hatan "to call, name, command") merged with heht "called," active past tense of the same verb. Hatte was the only survival in Old English of the old Germanic synthetic passive tense. Proto-Germanic *haitanan "to call, summon," also is the source of Old Norse heita, Dutch heten, German heißen, Gothic haitan "to call, be called, command," and is perhaps from an extended form of PIE root *keie- "to set in motion," but Boutkan finds it to be of uncertain origin.