Can you quote the times Beowulf thanked god for his victories?
Yes, here are two instances where Beowulf thanked God for his victories:
1. "The ruler of the skies gave the Danes victory- he considered such things as nothing- I could not join in carrying out that plan" (lines 899-901).
2. "Then, O hero young in years, brave of deeds, protector firm of fame, let thy glory be eternal! Never despair of life. I will tend well to thy rewards if thou survive the battle. Goodly armor shalt thou give him; purchase I will get in exchange" (lines 638-643).