Tanach · Rishonim on Tanach · Ibn Ezra · Torah

Ibn Ezra on Genesis 12:7/אבן עזרא על בראשית י״ב:ז׳

אוַיֵרָא ד'. בדרך נבואה והמלה מבניין נפעל והנוח הנעלם בין היו"ד והרי"ש תחת הדגש, הראוי להיות ברי"ש להתבלע נו"ן נפעל:
1AND THE LORD APPEARED. In a prophetic vision. Va-yera (appeared) is a nifal. It is vocalized with a tzere to make up for the dagesh which should have been placed in the resh as compensation for the missing nun of the nifal conjugation.16 of the nifal is omitted in the imperfect. Hence all imperfect nifal forms have a dagesh in the first letter of the root, i.e., yikkatev, rather than yikhatev. However, the resh of ra’ah (saw), from the root resh, alef, heh, cannot receive a dagesh. Hence it is preceded by a tzere, rather than a chirik. Va-yera is an imperfect changed into a perfect by the vav conversive.
בהנראה אליו. שם התואר מהבנין הנזכר וכמוהו "ואשר היה נעשה" (נחמיה ה יח):
2WHO APPEARED UNTO HIM. Nireh is a participle belonging to the above-mentioned conjugation (nifal). Na’aseh (prepared) in Now that which was prepared (na’aseh) for one day (Neh. 5:18) is similar.