יחזקאל ל:כה פירוש: רש״י

And I shall grasp [Heb. וְהֲחֲזַּקְתִּי,] an expression of grasping, that one grasps his hand to support it so that it should not fall. The end of it proves it: “and the arms of Pharaoh will fall,” because He does not hold them.