Jesus‘ final directive to His followers and encouragement in how to carry out His command is found in Acts 1:8, You will receive power when the Holy Spirit has come upon you; and you shall be my Witnesses both in Jerusalem, and in all Judea and Samaria, and even to the ends of the earth. By Jesus‘ command we are to share the Gospel of salvation through Jesus Christ to our local neighbors AND around the world.
Some believers feel they are not called to share the Good News but Acts 1:8 is clear...
The command is for each and every one of us!
The Power to witness comes only through the Holy Spirit Himself. Each of us received the same Holy Spirit at our salvation. Peter said in Acts 2:38, Repent, and each of you be baptized in the name of Jesus Christ for the forgiveness of your sins; and you will receive the gift of the Holy Spirit. The guidance to witness comes from the Holy Spirit. Acts 16:6, They passed through Phrygian and Galatian region, having been forbidden by the Holy Spirit to speak the word in Asia.
This passage drives our strategy to pray, give, and go to our Jerusalem, Judea, Samaria, and the Ends of the Earth and the Holy Spirit empowers us!