‘ And David was deeply upset, because YHWH had broken forth on Uzzah, and he called that place Perets-uzzah, to this day.'
Understandably David was ‘deeply upset' (or ‘smouldered') at what had happened (the root of the verb is ‘to glow, be on fire'). It is doubtful if in context we should translate it as ‘angry' here although it can undoubtedly mean that on other occasions. If we do we must see the anger as directed against Uzzah for daring to touch the Ark, or against those who had failed to inform him of the special arrangements necessary for bearing the Ark. For in his religious soul he would have been as appalled as anyone else at what Uzzah had done. He certainly would not have blamed YHWH, (Whose instructions, when looked into, were perfectly clear). The thought here is rather of the deep, overwhelming effect that what had happened had had on him. Indeed he was so deeply troubled and perplexed that he was unsure of what to do next. His question was, ‘What should I do now?'
And that deep disturbance at the fact that YHWH had ‘broken forth' (perets) on Uzzah was reflected in the fact that he gave a new name to the spot where it had happened, naming it perets-uzzah, ‘the breaking forth on Uzzah'.