Zephaniah 2:11 The LORD will be terrible unto them: For he will famish all the gods of the earth; And men shall worship him, every one from his place, Even all the isles of the heathen.
There are false gods on this earth. They are worshipped by people though they are really nothing. The God of heaven has shown His power many times and it has been rejected but there is coming a day when He will in great power show how awesome He is. All the false gods will die. They will show what they really are, nothing.
People all over the earth are going to worship God. Those that have never heard are going to hear and worship. God is going to be victorious. People all over the world are going to worship Him.
Every knee shall bow and every tongue confess that Jesus Christ is Lord. That is a promise. It is a fact. As we go out carrying the gospel we must know that our success or rather His success is promised. He will be worshipped.