Also see definition of "Constantly" in Word Study
Constantly
CONSTANT; CONSTANTLY [isbe]
CONSTANT; CONSTANTLY - kon'-stant, kon'-stant-li: In 1 Ch 28 (chazaq) meaning "firm," "strong." In Prov 21:28 the adverb ("constantly") of the King James Version is replaced in the American Standard Revised Version by "shall speak so as to endure," the English Revised Version "unchallenged." the Revised Version (British and American) gives "confidently" for the King James Version "constantly" in Acts 12:15; Tit 3:8.
Also see definition of "Constantly" in Word Study