For all this they sinned still - Even this did not reclaim them, and prevent their sinning. Heavy judgments do not always restrain men from sin. Not unfrequently they take occasion from such judgments to sin the more.
And believed not for his wondrous works - They did not trust in His wondrous works; or, those works did not have the effect of producing faith. See Psalms 78:22-23. The same thing occurred in the life of the Saviour. John 12:37.