Many people, when recounting Saul's conversion on the road to Damascus, depict Saul (now known as Paul) as having been knocked off his horse. In fact, many paintings and illustrations for children (such as illustrated Bibles) depict the same thing. The problem is, Saul was never on a horse. Like most of people's erroneous theology, they obtain it from sources other than from the Bible. They obtain it from paintings, plays, Christmas songs, etc., but never observe what the Bible says about it. Let us see what the Bible has to say about this event:
Now Saul, still breathing threats and murder against the disciples of the Lord, went to the high priest, and asked for letters from him to the synagogues at Damascus, so that if he found any belonging to the Way, both men and women, he might bring them bound to Jerusalem. And it came about that as he journeyed, he was approaching Damascus, and suddenly a light from heaven flashed around him; and he fell to the ground, and heard a voice saying to him, "Saul, Saul, why are you persecuting Me?"
And he said, "Who art Thou, Lord?"
And He said, "I am Jesus whom you are persecuting, but rise, and enter the city, and it shall be told you what you must do."
And the men who traveled with him stood speechless, hearing the voice, but seeing no one. And Saul got up from the ground, and though his eyes were open, he could see nothing; and leading him by the hand, they brought him into Damascus. And he was three days without sight, and neither ate nor drank. —Acts 9:1-9
In the account above, it informs us very clearly that Saul "fell to the ground" (v.4), not that he fell off a horse. Also, the men who were with Saul "stood speechless" (v.7), which means they were on foot; otherwise it would have said that they were or remained speechless. If there were a horse present, it would have been easier for them to have put the blinded Saul on the horse and then lead the horse. As it is, however, they were "leading him by the hand" (v.9).