Jesus said in Matthew 28:18-19, “All authority in heaven and on earth has been given to me. Go therefore and make disciples of all nations…”
Jesus’ claim to have ALL authority in the entire universe is the basis for his command to make disciples of ALL nations.
This is extremely important.
If Jesus only has some authority, he could only call for the allegiance of some people.
If Jesus only has some authority, and Mohammed some authority, and Krishna some authority, and the Buddha some authority; it would be feasibly and appropriate for Christians to worship Jesus, Muslims to worship Allah, Hindus to worship Krishna, and Buddhists to worship Buddha.
Similarly, if Jesus only has authority over the Middle East, he could only call Middle Eastern people to follow him.
Or if Jesus only has authority over Europe, he can only call Europeans to follow him.
Or imagine that Jesus only has authority over the mountains, he could only call people living in mountainous regions to follow him.