Jesus is not speaking of resurrection in the future tense. Well, he is, but not as if it is somewhere over the rainbow. The resurrection is not a future event. Neither is it a present event. He is saying, “I am the resurrection.” The resurrection is not an event. It is a person. Jesus is the resurrection. Jesus is the life. Jesus is not asking Martha to believe in something that will happen in the future. He wants her to know by believing in him now, the future has already happened.
— Read on www.seedbed.com/why-the-resurrection-is-not-our-hope/