Seems to me, if one doesn't knoW WHO Jesus is, we really can't have faith that He can do anything for us. Otherwise, we ask like Pharoah, "Who is the LORD, that I should obey his voice...?" Who is Jesus, that He can do anything for me?
Well, He is the Messiah, the promised one of God, revealed in Genesis 3 as the one who would bruise the serpent's, Satan's, head, which He did on Calvary. Etc, etc, prophecies, David, Solomon, etc..."
What seems to be being espoused here by some is the basics of easy-believeism, "Just believe in Jesus and that He died for your sins, and you can go to heaven! Yay!" ALL the information in the Bible about Jesus, from Moses and the prophets, the gospels and the epistles are 'able to make thee wise unto salvation through faith in Christ Jesus" (2Tim 3;15) What scriptures do we think Paul was talking about to TImothy, that he knew from childhood? Certainly not the NEW Testament. Timothy was only half Hebrew, half Greek, raised by a Greek father and trained in both, but it wsas the OT that Paul lauded to him as being able to make him saved by faith in Christ Jesus. Not by the law or works or any such thing.