The International Standard Bible Encyclopedia, Revised
Constantly “Affirm constantly” is archaic in Acts 12:15, AV, for Gk. diischyrízomai (cf. Lk. 22:59), and in Tit. 3:8, AV, for diabebaióomai; the RSV translates “insist.” Prov. 21:28, AV, “the man that heareth speaketh constantly” (Heb. neṣaḥ), is in the RSV “the word of a man who hears will endure”;
International Standard Bible Encyclopedia
CONSTANT; CONSTANTLY<kon’-stant>, <kon’-stant-li>: In 1 Chronicles 28 (chazaq) meaning “firm,” “strong.” In Proverbs 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
The International Standard Bible Encyclopaedia, Volumes 1–5
Constant, Constantly
CONSTANT, konʹstant, CONSTANTLY, konʹstant-li: In 1 Ch 28 (ḥāzaḳ) meaning “firm,” “strong.” In Prov 21:28 the advb. (“constantly”) of AV is replaced in ARV by “shall speak so as to endure,” ERV “unchallenged.” RV gives “confidently” for AV “constantly” in Acts 12:15; Tit 3:8.