What are the rules for the sojourners in the Old Testament?

UPDATE and Final question: **Genesis 17:13**: > He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant. **Isaiah 56:6-7**: > Also the sons of the stranger, that join themselves to the LORD, to serve him, and to love the name of the LORD, to be his servants, every one that keepeth the sabbath from polluting it, and taketh hold of my covenant; > > Even them will I bring to my holy mountain, and make them joyful in my house of prayer: their burnt offerings and their sacrifices shall be accepted upon mine altar; for mine house shall be called an house of prayer for all people. NEW................................................. The question - After trying to understand all this I figured out the question what it should be - Are strangers / sojourners that are serving the Lord in the Old Testament saved by not being circumcisioned and only obeying the rules dedicated for the sojourners and not the children of Israel. If someone knows the answer let me know. Thanks in advance. OLD ------------------------------------------------------------ The question: Does the rules for the sojourners in the Old Testament - save the pagan sojourners and if yes or no - does this make them part of the Old covenant? Is was thinking if the Isaiah 56:6-7 is relevant for the pagan sojourners? - I don't think that it necessarily mean that the pagan sojourners have chosed to serve God and without circumcision they can be saved. More then one "?" but related to one question. **Background:** How are the rules for the sojourners in the Old Testament? They are not necessarily servants of God right? They could be pagan sojourners? - uncircumcised without being part of the Old Covenant? If they are pagan sojourners that are not serving God as contrary to Isaiah 56:6-7 (where strangers have chosed to serve God and I believe they are circumcised? Genesis 17:13), but the sojourners that are just passing the land of the Jews, according to the Old Covenant would they be saved by the rules for the sojourners back in the Old Covenant without them being circumcised? In the Old Covenant could there be servants of God without being circumcised and be saved? Could a person back in the days of the Old Covenant be part of the Old Covenant without being circumcised? I am asking this questions since there is a person that is applying to himself the rules for the sojourners from the Old Covenant probably without him being circumcised, but observing the sabbath - probably saying that this saves a person when part of the New Covenant. These rules for the sojourners were they not rules for pagan sojourners too that did not serve God, and how could they be saved in the Old Testament days, if they did not serve God, and how possibly these rules could help a person to be saved in the New Testament since these rules did not save the sojourners in the Old Testament? I am not sure if you understand what I mean. I am not familiar so much with the Old Testament this is why I ask here this question. I am not sure if I am wrong somewhere please let me know if I have wrongly understood the rules for the sojourners or anything else. With my current understanding and knowledge this above sounds strange to me. I think that if a person even not a Jew wanted to be saved in the days of the Old Testament must have been under the Old Covenant circumcised observing all the customs, not only the rules for the sojourners? Thanks in advance.