Johannes Leusden (also called Jan (informal), John (English), or Johann (German)) (1624 - 1699) Dutch Calvinist theologian and orientalist.

Leusden was born in Utrecht. He studied in Utrecht and Amsterdam and became a Professor of Hebrew in Utrecht, where he died, aged 75. Leusden was one of the most prominent Bible experts of his time and wrote several works about the Bible and about Hebrew philology (Philologus Hebraeus, 1656, Philologus Hebraeo-Mixtus, 1663, Philologus Hebraeo-Latino-Belgicum, 1668, Philologus Hebraeo-Graecus, 1670, Korte Hebreusche en Chaldeusche taalkonst, 1686). In 1660, together with the Amsterdam rabbi and book printer Joseph Athias, he published his Biblia Hebraica, the first edition of the Hebrew Bible with numbered verses.

Source: Wikipedia