I think this verse from John expresses clearly why Jesus came and died for us. This is part of His final prayer for us in John 17 (ESV).
It is worth reflecting on this Very Good Friday…
25 O righteous Father, even though the world does not know you, I know you, and these know that you have sent me. 26 I made known to them your name, and I will continue to make it known, that the love with which you have loved me may be in them, and I in them.”
May it be so.