Luke chapter 23 tells us the story: There were two men, crucified with Jesus. Criminals. One laughed at Jesus: If you are the Messiah, rescue us. The other one suddenly believed: Jesus is the son of God. And he asks: Pray for me in heaven. And Jesus answered: Today you will be with me in Paradise.
Jesus AND the two men: Even in the loneliness of suffering and death is Jesus with us. There is this AND. Jesus is there.
With Jesus God himself went into suffering and death. He is not only a far-away-God, siting on a heavenly throne. He is with us in the darknesses of life. There is this AND even in the deepest loneliness. So the Cross becomes a +, a positive sign.