Hot anger has taken hold of me

This is an idiom. Anger is expressed as if it is a person that can grab another person. AT: "I have become very angry" (See: rc://en/ta/man/translate/figs-idiom and rc://en/ta/man/translate/figs-personification)

Your statutes have been my songs

"I have used your statutes as lyrics to my music" or "I have created songs from your statutes"