Why Was Passover on the Night of the 14th?

In Exodus 12, why did God have the passover killed right after sunset at the beginning of the 14th day of the first month when his plan called for Jesus to fulfill the Passover sacrifice by dying on the afternoon of the 14th near the end of that day? In this sermon Gary Smith gives us the answer to this important question.

Gary Smith was born in Charlotte, North Carolina, but spent most of his youth in the Pasadena, California area. He graduated from Ambassador College in 1976 and he and his wife, Liz, moved to Peoria, Illinois. For the next six years he worked as a nursing home administrator in Illinois, Ohio, and Texas.
In 1982, he and Liz began to serve in the full-time ministry. Since that time, they have served in a number of congregations in the Midwest.
Gary and Liz now pastor in Houston, Texas near their two children and grandson.
Apart from pastoring, Gary enjoys hiking, playing and watching sports, reading and spending time with family.