Deuteronomio 32:27

I feared. Figure of speech Anthropopatheia ( App-6 ).

behave themselves strangely = mistake it. Hebrew. naka r, a Homonym with three meanings: (1) to mistake, Deuteronomy 32:27 ; (2) to acknowledge, Job 34:19 ; (3) to deliver. 1 Samuel 23:7 . Both Authorized Version and Revised Version miss the first (Revised Version = misdeem), admit the second and third (though the Revised Version margin suggests "alienated" for "delivered").

the LORD = Jehovah. Note the five Divine Titles in this song. App-4 .