Do you know that you are in direct conflict with what scriptures say?
And apparently you are unaware of a common Hebrew idiom of speech as well.
Lets look at 1 Kings 19 15-18
15 Then the Lord said to him, “Go and return by the way you came to the Wilderness of Damascus. When you arrive, you are to anoint Hazael as king over Aram. 16 You are to anoint Jehu son of Nimshi as king over Israel and Elisha son of Shaphat from Abel-meholah as prophet in your place. 17 Then Jehu will put to death whoever escapes the sword of Hazael, and Elisha will put to death whoever escapes the sword of Jehu. 18 But I will leave 7,000 in Israel—every knee that has not bowed to Baal and every mouth that has not kissed him.”
Now lets look at 2 Kings 8:7-15
7 Elisha came to Damascus while Ben-hadad king of Aram was sick, and the king was told, “The man of God has come here.” 8 So the king said to Hazael, “Take a gift with you and go meet the man of God. Inquire of the Lord through him, ‘Will I recover from this sickness?’”
9 Hazael went to meet Elisha, taking with him a gift: 40 camel-loads of all kinds of goods from Damascus. When he came and stood before him, he said, “Your son, Ben-hadad king of Aram, has sent me to ask you, ‘Will I recover from this sickness?’”
10 Elisha told him, “Go say to him, ‘You are sure to[a] recover.’ But the Lord has shown me that he is sure to die.” 11 Then Elisha stared steadily at him until Hazael was ashamed.
The man of God wept, 12 and Hazael asked, “Why is my lord weeping?”
He replied, “Because I know the evil you will do to the people of Israel. You will set their fortresses on fire. You will kill their young men with the sword. You will dash their little ones to pieces. You will rip open their pregnant women.”
13 Hazael said, “How could your servant, a mere dog, do this monstrous thing?”
Elisha answered, “The Lord has shown me that you will be king over Aram.”
14 Hazael left Elisha and went to his master, who asked him, “What did Elisha say to you?”
He responded, “He told me you are sure to recover.” 15 The next day Hazael took a heavy cloth, dipped it in water, and spread it over the king’s face. Ben-hadad died, and Hazael reigned instead of him.
So now either God is lying or you are incorrect.
There is a common idiom of speech in Hebrew where there is no inclusion of the messenger when discussing a message given by a person.
Look at the two tales of the Faith of the Centurion in the New Testament.
In Matthew it appears that the Centurion is speaking directly to Jesus...but in Luke the inclusion of the messenger delivering the messages is made clear and it is written differently. The story is the same of the same events between the two writers...but Luke is Roman and doesn't own the idiom of Hebrew Speech.
So in this instance Elisha is carrying out a message for Elijah....not that Elijah was just taken farther than the 50 men could search.