וְלֹא־יִקָּרֵ֥א ע֛וֹד אֶת־שִׁמְךָ֖ אַבְרָ֑ם וְהָיָ֤ה שִׁמְךָ֙ אַבְרָהָ֔ם כִּ֛י אַב־הֲמ֥וֹן גּוֹיִ֖ם נְתַתִּֽיךָ׃
Y no se llamará más tu nombre Abram, sino que será tu nombre Abraham, porque te he puesto por padre de muchedumbre de gentes.
The Midrash of Philo
What is the meaning of, "Thy name shall not be called Abram, but Abraham shall thy name be?" (Genesis 17:5).
On the Change of Names
[60] On these He presently bestows as their due a different name. “Thy name shall not be called Abram (Ἀβράμ),” we read, “but Abraham (Ἀβραάμ)” (Gen. 17:5).