'Rest' in the Bible

I do not want you to be unaware, brethren, that often I have planned to come to you (and have been prevented so far) so that I may obtain some fruit among you also, even as among the rest of the Gentiles.

What then? What Israel is seeking, it has not obtained, but those who were chosen obtained it, and the rest were hardened;

so that I may come to you in joy by the will of God and find refreshing rest in your company.