When we say Jesus Christ, we are talking about a man who was so powerful and majestic that He could change the course of history with a single breath. His name is the only one in the whole Bible that we are told contains “the fullness of the Godhead” (Colossians 1:15), and so it’s right to expect that it conveys all of the splendor and power that he truly is. Unfortunately, this hasn’t stopped some people from trying to add more meaning to Jesus’ name by giving him a middle letter that does not appear anywhere in the Bible.
Specifically, the letter H is believed to stand for Harold, which some people believe was Jesus’ real first name. It’s unclear where this misguided tradition originated, though MentalFloss explains that it likely stemmed from a misunderstanding of the Greek word for Jesus, which was written as Iesous. Because the Greek letters looked similar to Latin ones, scholars in previous centuries misread it as IHC and then, assuming that C meant Christ, came to think of this as Jesus’ middle name.
This is completely untrue, however. Using any letter in God’s name in a hollow or meaningless manner is considered blasphemy, and is punishable by God. This includes the use of His name in a curse, which is a very serious offense. This is why it’s important to know what the letter H actually stands for so that we do not commit this terrible sin against our Lord and Savior.