Joab bowed down with his face to the ground in respect, and blessed the king. “Today,” said Joab, “I, your servant, know that you approve of me, Your Majesty, because you have granted my request.”
“Where is your master's grandson?” the king asked. Ziba answered, “He decided to stay in Jerusalem. He's saying, ‘Today the people of Israel will give me back my grandfather's kingdom.’”
As King David arrived at the town of Bahurim, a man from Saul's family was just leaving. His name was Shimei, son of Gera, and he was shouting out curses as he came.
When Mephibosheth, son of Jonathan, son of Saul, came to David, he bowed facedown to the ground in respect. Then David said, “Welcome, Mephibosheth.” “I am your servant,” he replied.
The evidence given by a single witness is not enough to prove a sin or a crime against someone, never mind what offense they are alleged to have committed. The facts must be confirmed by the evidence given by two or three witnesses.