Satan did not make up his accusation against Job. He was just repeating the accusation that Job’s fiends had already spoken. Because they were men of integrity and authority, God had to accept their testimony. Their testimony proved Satan’s case against Job, so he was legally entitled to inflict sickness on him. The devil brought sufficient testimony against Job that God had to agree and allow him to be punished.
Satan twisted the rules of justice to do evil. God’s principle of justice is that facts are established by the testimony of three witnesses.
One witness is not enough to convict anyone accused of any crime or offense they may have committed. A matter must be established by the testimony of two or three witnesses (Deut 19:15)Jesus confirms this in Matthew 18:16. Satan was able to accuse Job effectively, because he found three reliable witnesses who had testified against Job, without realising. This gave Satan the right to accuse Job and afflict him with sickness.
Christians need to understand the role of the accuser. He is looking for witnesses whose testimony he can use as accusations against God’s people. When we criticise other people and speak negative things about them, Satan can pick up these testimonies and accuse them before God. If he can find three people saying the same thing, he has the three witnesses that he needs to establish the accusation as fact. This gives him the right to afflict the accused person with sickness.
Many Christians are sick, because brothers and sisters in the Lord have spoken words of accusation against them and the accuser has taken these words and used them as testimony to accuse the person before God. Before they can be healed, the power of these testimonies must be broken.
The accusations of people in authority, such as parents, pastors and employers, provide even more powerful testimony. The enemy can say, “His pastor said that about him, so he must be bad; it must be true.”