So He could look forward to His Passion and Death and apply those merits in advance.Jesus forgave people, when they believed Him long before He died on the cross
She didn't do that. She just wanted to speak to her Son. Is that wrong?Matthew 12:47
While Jesus was still speaking to the crowds, His mother and brothers stood outside, wanting to speak to Him. 47 Someone told Him, “Look, Your mother and brothers are standing outside, wanting to speak to You.” 48But Jesus replied, “Who is My mother, and who are My brothers?”
You say mary believed. Why did she and Jesus' family try to stop Him from speaking to the crowd that had gathered? And why didn't Jesus point her out to the crowd? Did He obey her wish to stop speaking to the crowd?
23 For I received from the Lord what I also delivered to you, that the Lord Jesus on the night when he was betrayed took bread, 24 and when he had given thanks, he broke it, and said, “This is my body, which is for you. Do this in remembrance of me.” 25 In the same way also he took the cup, after supper, saying, “This cup is the new covenant in my blood. Do this, as often as you drink it, in remembrance of me.” 26 For as often as you eat this bread and drink the cup, you proclaim the Lord's death until he comes.
27 Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty concerning the body and blood of the Lord. 28 Let a person examine himself, then, and so eat of the bread and drink of the cup. 29 For anyone who eats and drinks without discerning the body eats and drinks judgment on himself. 30 That is why many of you are weak and ill, and some have died.
How can a mere symbol have the effect above?
A few ways. You should have started a few verses earlier.How can a mere symbol have the effect above?