Should I write 'god' with a small 'g' or a capital?

god里面的字母g，我该写成小写还是大写？

《牛津词典》

The requirement that your turns sum to zero is necessary to keep you from getting caught in certain loops, such as one shaped like a capital G (try it out on paper to see what I mean).

转身数的总和必须是零，这是为了避免陷入某些环路，比如大写字母 G 形状的环路（在纸上试着走一下这个形状，就会明白我的意思）。

youdao

Several participants Thursday said there is growing consensus among G-20 members that countries should be able to use capital controls under certain circumstances.

参加周四讨论的数位人士说，20国集团成员国越来越一致认为，各国应该能够在某些情况下使用资本控制。

youdao

So that will be appearing in your text as "God" with a capital G.

所以在你们书上，上帝的首字母是大写的。

耶鲁公开课 - 旧约导论课程节选

Okay, God. We have the word "God" being used I guess in that translation, right, with a capital G. What else is used?

没错，是上帝，我们在那张纸上，有关于上帝一词的翻译,大写字母G打头的，还有什么其他说法？

耶鲁公开课 - 旧约导论课程节选

If, as Mr Sants implied, the new G-SIFI capital increment settles at around 3%, that will be significantly less than the optimal level calculated by David Miles of the Bank of England's Monetary Policy Committee in an influential paper.

BBC: Sants: We wanted banks to hold more capital

That's guanxi with a capital G.

CNN: Election Watch

"The anxieties among the Koreans and other emerging nations are that the G-20 may not last, " said Avinash Persaud, chairman of Intelligence Capital, who attended recent G-20 deputy finance minister meetings.

CNN: Economic rifts loom as G-20 leaders meet