“so shamefully late.” The Hebrew word translated “long” in some versions is related to shame. Fox (The Schocken Bible) has “shamefully-late,” and Rotherham’s Emphasised Bible has “ashamed to come.”

“the hoofbeats from his chariots delayed?” The Hebrew word can refer to the sound of the chariots (NIV) or the sound of the horse's hoofs (NASB). It usually involves the sound of footsteps, so the hoofbeats of the horses seems likely correct.