One of the men that Lonnie Frisbee (Jonathan Roumie) talks to on the pier is Paras Patel who also plays Matthew in the series The Chosen along with Jonathan Roumie.
Despite pastor Chuck Smith being in his 40s at the time the film is set, Kelsey Grammer was 67 during the film's production. Pastor Greg Laurie was a teenager during much of the film's events but his portrayer Joel Courtney was 26. Lonnie Frisbee was 19 at the beginning of the film and yet is portrayed by Jonathan Roumie, who was 47. In fact, Frisbee was only 3 years older than Laurie yet Roumie is almost 22 years older than Courtney.
When Lonnie Frisbee talks to the men in the pier and the actor that plays Matthew in "The Chosen" gets the question "have you met Jesus yet" he replies as if he mistakes Lonnie for Jesus which I guess is a cue to that he has "seen him as Jesus" in that series.