Is he turned; he turneth - Or, “surely against me” hath he turned “his hand” again and again “all the day long.”
Matthew Henry
Concise Bible Commentary
The prophet relates the more gloomy and discouraging part of his experience, and how he found support and relief. In the time of his trial the Lord had become terrible to him. It was an affliction that was misery itself; for sin makes the cup of affliction a bitter cup. The struggle between unbelief and faith is often very severe. But the weakest believer is wrong, if he thinks that his strength and hope are perished from the Lord.