Final answer:
In the texts, Gawain is declared purged of his sins by God, who forgives him for his wrongdoings.
Step-by-step explanation:
In the context of the provided texts, Gawain is declared purged of his sins by God. In the first passage, it is suggested that a Voice may have spoken for Gawain, seeking forgiveness from God. In the second passage, Gawain's soul is said to be 'alone with God in judgment.' The mention of Calvary, the crucifixion site of Jesus, hints at the role of God in forgiving sins. Finally, in the third passage, Malcolm reports that Gawain confesses his treasons and expresses deep repentance before his death, indicating his desire for absolution from his sins.