'Although' in the Bible

Now concerning virgins, although I do not have any command from the Lord, I will give you my opinion as one who by the Lord's mercy is trustworthy.

Although I am free from everyone's expectations, I have made myself a servant to all of them to win more people.

To the Jews I became like a Jew in order to win Jews. To those under the Law I became like a man under the Law, in order to win those under the Law (although I myself am not under the Law).

because a door has opened wide for me to do effective work, although many people are opposing me.