Acts 1:8 But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth.

What comes in mind when we hear or read the word "Witness"??? Most of us might imagine a pastor preaching in the Church, sick people healed during crusades and others.
Yep, those are all correct! But we DO NOT want to only stop in "CORRECT", we all want to get deeper which is the "TRUTH." Some things in life may be good or nice to people but not true in the eyes of God.
For example, a boy gives an answer to his friend during a test. Well, the friend who got the answer would think that he is nice, but that deed is inappropriate for the teachers.
In the Bible, God wants us to spread the Gospel not only by WORDS but also in ACTIONS which is pretty hard. It is easy for us to command people to go to Church, read the Bible regularly, pray regularly and stuff. However, we need efforts to really accomplish it.
The fact shows that the world pays more attention to deeds than words. For them, our ACTIONS speak very loud that they can't hear our words anymore!
The next question is WHERE do we spread the Word of the Lord? Acts 1:8 said that we have to be witnesses in Jerusalem, Judea, Samaria and to the ends of the world. So, does this mean that Christians must migrate to the middle east to preach? NO!
What the Bible is trying to say is that we have to be the light and salt to our family (Jerusalem), our community or friends (Judea), people who we meet or office, university, college, schools, etc (Samaria) and anywhere we are (ends of the earth)! Amazing, isn't it!!??
For regular people like us, it would be a very hard work! But don't worry, God has sent His Holy Spirit to teach, guide and strengthen us!
So, what are we waiting for? Let's preach the Word! Let the Fire of the Holy Spirit burn in us! Amen!