In the gospel of John, he gives the purpose of the 7 (miracles) signs recorded in the gospel. They are woven into his writing, allowing us to believe the good news. John 3:15 says that whoever believes in Him should not perish but have eternal life. 16 For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.
Observe the contrast between the man healed at the pool and the blind man in chapter 9. Believing is always hard for people, as you can see from reading the signs' responses. John shares how Jesus revealed who he was and his purpose to die on the cross for our sins. The signs deal with the natural world, provision, disease, and death. Jesus caused things to happen that do generally not occur.
As we age, we need encouragement to believe in God for the things ahead. I would love to see you in heaven. Believe in the Lord Jesus Christ.
I will share another chart on the "I am"s where they reveal who he is.
