For there are three that testify: ⁸ the Spirit and the water and the blood; and these three agree. ⁹ If we receive the testimony of men, the testimony of God is greater, for this is the testimony of God that he has borne concerning his Son. ¹⁰ Whoever believes in the Son of God has the testimony in himself. Whoever does not believe God has made him a liar, because he has not believed in the testimony that God has borne concerning his Son. ¹¹ And this is the testimony, that God gave us eternal life, and this life is in his Son. ¹² Whoever has the Son has life; whoever does not have the Son of God does not have life.
(1 John 5:7-12 -- ESV) 


"If you could have dinner with any three people living or dead, who would they be?" 

The politically correct answer would be three celebrities, or sports heroes, or three dead U.S. presidents.  Otherwise, the obvious first person to choose would be Jesus.  The second and third persons could be the Father and the Holy Spirit, but we'll see them in heaven.  Same for my dad and my grandma.  How about Adolph Hitler and Judas Iscariot, since we won't see them in heaven?  Or Amelia Earhart and Jimmie Hoffa so I could ask them what happened.  Wait, it's a trick question -- nothing is said in the question about how often I can have this imagined dinner, or if I can eat with all three at the same time.  So, I could have dinner over and over again with Jesus and a different two of my friends or relatives (and then strangers) who don't believe in Him as their savior.  If they could see Him and talk with Him, they would believe in Him.  That's my answer . . .