Who was Jesus really?
How can I be sure?
"In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made. In him was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not." John, chapter 1, verses 1 through 5 (KJV).
"For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life." John, chapter 3, verse 16 (KJV).
"The Word" is Jesus, "the only begotten Son" is Jesus, and that same Jesus is the only way to salvation and the forgiveness of sin. He was born of a virgin, in a stable. He lived among the common people. He died a death on the cross. He was buried in a tomb. He arose from the dead and was received into heaven to sit at the right hand of God, as the Son of the Father.
Yet, he began life as a carpenter's son, a child of seemingly humble lineage. All manners of people have had expectations about Him, what He could and can do, what His kingdom would and will be about. Untold numbers of people have praised His holy name; untold numbers of people have cursed His holy name. How many people have ever taken Him for granted, or still today simply decide to ignore Him altogether?
Not a single one of them ever was, or is, or ever will be, unknown to Him.