“But you are my witnesses, O Israel!” says the LORD. “You are my servant. You have been chosen to know me, believe in me, and understand that I alone am God. There is no other God— there never has been, and there never will be.” Isaiah 43:10 NLT
As a child of God you are both a witness and a servant of the Lord. A witness to the fact that He is the one true God - there is no other.
You have also been chosen as a servant of the Most High God. You have been chosen to know Him...to believe Him...to understand who He is.
You are in pretty good company. God's word says that He also chose someone else as His servant and witness - Jesus. “Look at my Servant, whom I have chosen. He is my Beloved, who pleases me. I will put my Spirit upon him, and he will proclaim justice to the nations.” Matthew 12:18 NLT
This is all part of God's plan for you. That's right, God has chosen you and has a plan for you. Part of that plan is to serve Him and show others who He is to you.
What an incredible privilege...look for today's opportunities.