|Noah Webster's Dictionary|
(adv.) With this.
Int. Standard Bible Encyclopedia
her-with', Hebrew ba-zo'th, bezo'th, "in," "by," or "with this" (Ezekiel 16:29 Malachi 3:10, "Prove me now herewith, saith Yahweh").
The Revised Version (British and American) has "herein" for "to do this" (Ezra 4:22); for "in these things" (Romans 14:18); "of them that have sinned heretofore" for "which have sinned already" (2 Corinthians 12:21); "hereunto" for "thereunto" (1 Peter 3:9); "herewith" for "thus" (Leviticus 16:3).
W. L. Walker
Herewith (4 Occurrences)
Luke 19:13 And he called ten servants of his, and gave them ten pounds, and said unto them, Trade ye 'herewith' till I come. (ASV)
Romans 16:1 Herewith I introduce our sister Phoebe to you, who is a servant of the Church at Cenchreae, (WEY)
Leviticus 16:3 "Herewith shall Aaron come into the sanctuary: with a young bull for a sin offering, and a ram for a burnt offering. (WEB JPS ASV)
Ezekiel 16:29 Thou hast moreover multiplied thy fornication in the land of Canaan unto Chaldea; and yet thou wast not satisfied therewith. (Root in KJV JPS ASV DBY)