In Acts 3:19-20, Peter said that Jesus would only return after Israel repents from their sins. Does that include recognizing him as Messiah? Maybe not. Consider the pattern of Joseph and his brothers in Egypt… Joseph didn't reveal his full and true identity to his brothers until after he was certain they had repented for what they did to him so many years before. Expect this same pattern to play out in the #endtimes. That's not to say that they don't need to repent and recognize him.

A call to repentance is a blessing, because only thru repentance can we receive the fullest blessing that God intends for us. (Acts 3:26) Ignoring the sins of anyone (including the Jews) isn't a blessing, but a curse.