But who now is that Mediator, who in one person is true God and also a true and righteous man?

Heidelberg Catechism

Question 18. But who now is that Mediator, who in one person is true God and also a true and righteous man?

Answer. Our Lord Jesus Christ,[1] who is freely given unto us for complete redemption and righteousness. [2]

[1] Mt 1:21-23; Lk 2:11; 1 Tim 2:5, 3:16;
[2] Acts 4:12; 1 Cor 1:30