45 Philip found Nathanael and said to him, "We have found him of whom Moses in the Law and also the prophets wrote, Jesus of Nazareth, the son of Joseph." Nathanael said to him, "Can anything good come out of Nazareth" Philip said to him, "Come and see.""Bartholomew" (Greek: Βαρθολομαῖος Bartholomaios "son of Tolmai" or "from Ptolemais" (of Aramaic origin: בַּר bar (Aramaic) son + תַּלְמַי Talmai = "furrowed") from תֶּלֶם telem = "furrow," from an unused root word meaining "to accumulate," often identified with the Nathanael (Greek Ναθαναήλ Nathanaēl of Hebrew origin נְתַנְאֵל Nĕthane'l "given of God") of John 1:45-1:51.
He was listed as one of The Twelve Apostles (Matthew 10:2-4; Acts 1:13).
He was honest
47 Jesus saw Nathanael coming toward him and said of him, "Behold, an Israelite indeed, in whom there is no deceit!"and he was faithful (John 1:49).
Jesus told him "Truly, truly, I say to you, you will see heaven opened, and the angels of God ascending and descending on the Son of Man."He was a witness of the miracle catch of fish and ate with Jesus after his resurrection.
12 Men Who Shook the World
Where is God?
(The Problem of Evil) by John Piper – Parts 1-6