Here "Even today" emphasizes that his friends arguments have not changed Job's situation at all. Alternate translation: "In spite of what you have said, my complaint is rebellion"
Possible meanings are 1) "I can barely lift my hand because of my groaning" or 2) "God's hand continues to make me suffer in spite of my groaning" where "hand" refers to God's power to punish. (See: [[rc://en/ta/man/jit/figs-metonymy]])