I was recently asked to describe the difference between “trusting Jesus” and “trusting in Jesus” and to distinguish between “believing Jesus” and “believing in Jesus.”
The first pair of terms are both used to express one’s faith, belief, and personal trust in Jesus. Therefore, no difference exists between them in that regard. However, the second set of expressions can differ depending on the person.
For example, someone can say they believe in Jesus, meaning they believe facts about Him but have not placed their faith and trust in Him as Savior. James 2:19 identifies this type of belief by stating, “You believe that there is one God. You do well. Even the demons believe—and tremble!” Therefore, believing things about Jesus differs significantly from believing in Him for salvation, etc.
However, someone else can believe facts about Jesus but it results in them placing their faith in Him. One of my favorite stories that illustrates this dynamic took place in the 1800s:
Charles Blondin was a French tightrope walker who made history by crossing Niagara Falls on a tightrope in 1859. He was so skilled that he could even push a wheelbarrow, ride a bicycle, and carry a person on his back while crossing. Undoubtedly, the person he carried across Niagara Falls on a tightrope believed he was capable of performing such a dangerous feat. But when he climbed onto Charles' back and allowed him to carry him across the Falls, his belief converted into trusting him to take him safely across.
Similarly, we can believe certain facts about Jesus (like His ability to safely transport us from death to life by His grace). But until we place our faith and trust in Him for it, our belief is merely cerebral and does nothing to save us. Therefore, “believing Jesus” and “believing in Jesus” could differ depending on the person.
I hope this answer helps you understand the difference between these various terms.