Originally Posted by Tj3
Let's look at Luke 20:38 in context:
Luke 20:27-40
27 Then some of the Sadducees, who deny that there is a resurrection, came to Him and asked Him, 28 saying: "Teacher, Moses wrote to us that if a man's brother dies, having a wife, and he dies without children, his brother should take his wife and raise up offspring for his brother. 29 Now there were seven brothers. And the first took a wife, and died without children. 30 And the second took her as wife, and he died childless. 31 Then the third took her, and in like manner the seven also; and they left no children, and died. 32 Last of all the woman died also. 33 Therefore, in the resurrection, whose wife does she become? For all seven had her as wife." 34 And Jesus answered and said to them, "The sons of this age marry and are given in marriage. 35 But those who are counted worthy to attain that age, and the resurrection from the dead, neither marry nor are given in marriage; 36 nor can they die anymore, for they are equal to the angels and are sons of God, being sons of the resurrection. 37 Now even Moses showed in the burning bush passage that the dead are raised, when he called the Lord 'the God of Abraham, the God of Isaac, and the God of Jacob.' 38 "For He is not the God of the dead but of the living, for all live to Him." 39 Then some of the scribes answered and said, "Teacher, You have spoken well." 40 But after that they dared not question Him anymore
NKJV
Note that this has to do with a discussion with the Sadduccees who denied the resurrection of the dead, and Jesus refuting them, showing that the dead were indeed resurrected.
Let's look at John 11:26 in context:
John 11:22-27
23 Jesus said to her, "Your brother will rise again." 24 Martha said to Him, "I know that he will rise again in the resurrection at the last day." 25 Jesus said to her, "I am the resurrection and the life. He who believes in Me, though he may die, he shall live. 26 And whoever lives and believes in Me shall never die. Do you believe this?" 27 She said to Him, "Yes, Lord, I believe that You are the Christ, the Son of God, who is to come into the world."
NKJV
This has absolutely nothing to do with the prohibition in scripture against communicating with those who are dead in the flesh.
Interesting distinction - care to share with us where you would find such a distinction in scripture?