A witness is an observer, who having witnessed the occurrence of an event, gives a full and accurate account of what happened. God emphasises the role and importance of witnessing. He has also given detailed instructions about the conduct of witnesses, whether in evangelism, legal proceedings or in general affairs of the church. In several passages of the Bible, God repeatedly called on us to be His witnesses (Isaiah 43:12b, Luke 24:48). Most importantly, Jesus in Acts 1:8 said this to His disciples:
“But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth.”
This confirms that one of the roles of the Holy Spirit is to equip and empower the Body of Christ for the purpose of witnessing. Therefore, witnessing is a major assignment of the Church. The role of Christians as witnesses is not limited to our immediate community; rather it extends to the uttermost parts of the earth.
 
Why is witnessing so important that God lays so much emphasis on it? First and foremost, it is to prove Him as the only true God who created all things by His wisdom and determines the course of all things (Acts 17:24-28). Whenever God says “ye are My witnesses”, it is to prove Him as a covenant keeping God who always brings His words to pass in the life of His people (Numbers 23:19). The emphasis on witnessing is also to prove that human disobedience is always as a result of unbelief and unwarranted stubborn rebellion. So, we are to constantly testify or witness about sin and righteousness to ourselves as believers, and against the ungodly people of this world (Isaiah 59:12, Matthew 24:14).
 
Finally, the emphasis on witnessing may also indicate a systematic build-up of evidence against those who refuse to accept Jesus as Lord and Saviour. Jude 1:15 reveals that heaven will present convincing evidence against the ungodly on the day of judgement. Be warned, Jesus is coming soon! Written by Pastor E.A. Adeboye.