The Law Giver is Jesus Christ

When we are born again, the Law Giver lives in us and we become a conviction to those who are not saved, not because we follow the Law, but because the Law changed us into an entirely new creation.

Jesus Christ is the very essence of His Law, the embodiment of all that is righteous. He is the judge and we are His messengers if we are born again!

2 Timothy 4
Preach the Word
"4 I solemnly exhort you in the presence of God and of Christ Jesus, who is to judge the living and the dead, and by His appearing and His kingdom:
2 preach the word; be ready in season and out of season; correct, rebuke, and exhort, with great patience and instruction.
3 For the time will come when they will not tolerate sound doctrine; but wanting to have their ears tickled, they will accumulate for themselves teachers in accordance with their own desires,
4 and they will turn their ears away from the truth and will turn aside to myths.
5 But as for you, use self-restraint in all things, endure hardship, do the work of an evangelist, fulfill your ministry."