Понятно, нет ответа. Насчет "god", "good", как "годный" (година, гад,ход,dog) - было сказано немало. Кстати, британцы сами выводят "god" от годный.
good (adj.) Look up good at Dictionary.com
Old English god (with a long "o") "virtuous; desirable; valid; considerable," probably originally "having the right or desirable quality," from Proto-Germanic *gothaz (cf. Old Norse goðr, Dutch goed, Old High German guot, German gut, Gothic goþs), originally "fit, adequate, belonging together," from PIE root *ghedh- "to unite, be associated, suitable" (cf. Old Church Slavonic godu "pleasing time," Russian godnyi "fit, suitable," Old English gædrian "to gather, to take up together"). As an expression of satisfaction, from early 15c.; of children, "well-behaved," by 1690s.
Хотя, сами от этого открещиваются:

god (n.) Look up god at Dictionary.com
Old English god "supreme being, deity; the Christian God; image of a god; godlike person," from Proto-Germanic *guthan (cf. Old Saxon, Old Frisian, Dutch god, Old High German got, German Gott, Old Norse guð, Gothic guþ), from PIE *ghut- "that which is invoked" (cf. Old Church Slavonic zovo "to call," Sanskrit huta- "invoked," an epithet of Indra), from root *gheu(e)- "to call, invoke."

But some trace it to PIE *ghu-to- "poured," from root *gheu- "to pour, pour a libation" (source of Greek khein "to pour," also in the phrase khute gaia "poured earth," referring to a burial mound; see found (v.2)). "Given the Greek facts, the Germanic form may have referred in the first instance to the spirit immanent in a burial mound" . Cf. also Zeus.

Not related to good. Originally a neuter noun in Germanic, the gender shifted to masculine after the coming of Christianity. Old English god probably was closer in sense to Latin numen. A better word to translate deus might have been Proto-Germanic *ansuz, but this was used only of the highest deities in the Germanic religion, and not of foreign gods, and it was never used of the Christian God. It survives in English mainly in the personal names beginning in Os-.

Впрочем, в словаре Клюге такое утверждение присутствует.

Да, про Тимура я так и не понял. Какова этимология? А про племя "бойев", которые основали Богемию, собственно, на этом форуме никто и не сомневается - сказки.