'Slow' in the Bible

And Moses saith unto Jehovah, 'O, my Lord, I am not a man of words, either yesterday, or before, or since Thy speaking unto Thy servant, for I am slow of mouth, and slow of tongue.'

and Jehovah passeth over before his face, and calleth: 'Jehovah, Jehovah God, merciful and gracious, slow to anger, and abundant in kindness and truth,