Romans 1:1

Paul, a servant of Jesus Christ, called an apostle, having been separated unto the gospel of God,

2 Corinthians 6:14-17

Be not unequally yoked together with unbelievers: for what participation is there to righteousness and unrighteousness? or what fellowship has light unto darkness?

Treasury of Scripture Knowledge

Summary

And the rest of the people, the priests, the Levites, the porters, the singers, the Nethinims, and all they that had separated themselves from the people of the lands unto the law of God, their wives, their sons, and their daughters, every one having knowledge, and having understanding;

Unto the law

Bible References

All they

2 Corinthians 6:14
Be not unequally yoked together with unbelievers: for what participation is there to righteousness and unrighteousness? or what fellowship has light unto darkness?

Unto the law

Romans 1:1
Paul, a servant of Jesus Christ, called an apostle, having been separated unto the gospel of God,