I read in the Book of Isaiah (Is. 56:1-8), about the foreigner joining Hashem. I asked my Rabbi briefly about this passage. He explained that the passage is probably neither about a gerut conversion ...
I was reading through this passage in Isaiah 56: 4 For thus saith the LORD concerning the eunuchs that keep My sabbaths, and choose the things that please Me, and hold fast by My covenant. 5 ...