Atharva Veda 19.59: An expiatory hymn accompanying sacrifice

God among mortals, Agni, thou art guard of holy Law, thou art To be adored in sacred rites.

When, ignorant, we violate the statutes of you, O Deities, with whom is knowledge, Wise Agni shall correct our faults and failings, and Soma who hath entered into Brāhmans.

To the Gods' pathway have we come desiring to execute what work we may accomplish.
Let Agni—for he knows—complete the worship. He is the Priest: let him fix rites and seasons.