[11] A single text pairs him with Sutītu,[12] one of the goddesses first attested in the first millennium BCE who represented specific ethnic or linguistic groups (in this case Suteans).
[13] According to Joan Goodnick Westenholz, a group consisting of these two deities and Nanaya is attested as a "special sub-unit in the local pantheon of Borsippa".
[2] While a single votive inscription mentioning Mār-bīti (of unknown provenance) has been dated to the Kassite period,[18] most of the known attestations of this god come from the first millennium BCE.
[14] In the former city, he was seemingly the main local god in the Neo-Assyrian period,[16] though an Old Babylonian inscription indicates that its tutelary deities were Ea and Damkina.
[2] During the reign of Shamshi-Adad V, Assyrian troops attacked said city and carried away the statue of Mār-bīti alongside those of other locally worshiped deities, such as Ištaran, Urkittu and Saĝkud of Bubê.
[20] It was returned by Ashurbanipal, and in one of the inscription of this king Mār-bīti is mentioned among the deities brought to the freshly rebuilt Edimgalkalamma,[21] "house, great bond of the land", the temple of Ištaran.
[14] A commentary on Enūma Eliš, known from copies from seventh century BCE Assur and from the library of Ashurbanipal (located in Nineveh),[23] makes an allusion to "Mār-bīti of Eshnunna"[24] and mentions a cultic race (lismu) dedicated to him, but there is no other evidence that he was a member of the local pantheon.
[2] Furthermore, according to the tablet BM 41239, a religious calendar, the sanctuary of Mandanu in Babylon was a stop in a procession of Mār-bīti and Ninurta from Borsippa to Kish which took place in the month of Šabāṭu.
[31] An oath formula from Kalhu from the reign of Sinsharishkun mentions Mār-bīti in a context indicating he was also worshiped in Assyria in association with Nabu, similarly as in Borsippa.
[2] Examples of theophoric names invoking Mār-bīti are known from Babylonia, including those of kings Mār-bīti-apla-uṣur (who likely originated in eastern Mesopotamia) and Mār-bῑti-aḫḫē-idinna.