Abraham Ibn Ezra (c. 1089-1167) was a Jewish scholar, poet, philosopher, grammarian, and astronomer born in Tudela, in what is now northern Spain. He is among the most prominent medieval Jewish intellectuals, known for his extensive biblical commentaries, Hebrew poetry, and works on mathematics, astronomy, and astrology. Ibn Ezra wrote prolifically in Hebrew at a time when Arabic was the dominant language of learning in the Islamic world, making his work accessible to Jewish communities in Christian Europe with limited or no Arabic literacy. His life was marked by decades of wandering across the Mediterranean world, including extended stays in Italy, France, England, and the Levant.

Ibn Ezra's biblical commentaries are his most enduring contribution. They are characterized by a commitment to peshat - the plain or contextual meaning of the text - and incorporate grammatical, philological, and occasionally philosophical analysis. Some passages in his commentaries have been interpreted by later scholars, including Baruch Spinoza, as containing early or veiled hints at what would become the Documentary Hypothesis - the critical view that the Pentateuch was composed by multiple authors rather than solely by Moses. Ibn Ezra neither explicitly made nor denied this claim, and the interpretation of his cryptic remarks remains a matter of scholarly discussion.

In the sciences, Ibn Ezra produced treatises on arithmetic, the astrolabe, and the calendar, and he translated works from Arabic into Hebrew. He was deeply engaged with Ptolemaic astronomy and with astrological theory, which in the medieval context was not sharply distinguished from astronomy as a discipline. Whether his writings show any engagement with non-geocentric or what some scholars have characterized as proto-heliocentric ideas has been a subject of specialized inquiry, particularly in the context of the Jewish historical engagement with heliocentric thought.

His poetry, written in the style of Andalusian Hebrew verse, covers sacred and secular themes and is included in the liturgy of some Jewish communities.

There is broad scholarly consensus on the broad outlines of Ibn Ezra's biography and the authenticity of his major works. Interpretive questions - particularly regarding the implications of his biblical commentary for the history of biblical criticism - remain open and contested. No single consensus page currently covers these interpretive debates.

• Ibn Ezra as proto-critical biblical scholar - Some scholars read his commentaries as encoding skepticism about traditional Mosaic authorship, making him a precursor to modern biblical criticism. See this viewpoint.
• Ibn Ezra as traditional rabbinic commentator - Others hold that his peshat method operated within the bounds of traditional Jewish interpretation and that cryptic passages have been over-read by later critics. See this viewpoint.
• Ibn Ezra and astronomical cosmology - A narrower question concerns whether his scientific writings engage with non-Ptolemaic or anticipatory heliocentric ideas. See the Jewish viewpoint on heliocentrism.

• Abraham Ibn Ezra - History
• Heliocentrism - Jewish Viewpoint
• Biblical Criticism
• Documentary Hypothesis
• Medieval Jewish Philosophy
• Hebrew Poetry - Andalusian Period

1. Sela, Shlomo. Abraham Ibn Ezra and the Rise of Medieval Hebrew Science. Brill, 2003.
2. Simon, Uriel. Abraham Ibn Ezra's Two Commentaries on the Minor Prophets. Bar-Ilan University Press, 1989.
3. Spinoza, Baruch. Tractatus Theologico-Politicus. 1670. Chapters 8-9 discuss Ibn Ezra's commentary on Deuteronomy.
4. Fleischer, Ezra. “Hebrew Liturgical Poetry in the Middle Ages.” In The Literature of the Sages, ed. Safrai et al. Fortress Press, 1987.
5. Levy, Raphael. The Astrological Works of Abraham Ibn Ezra. Johns Hopkins Press, 1927.