I am The Lord your God
You shall have no other gods before Me
As a Parent He puts claim to all of us as HIS children.
When we get to be parents, we are also possessive of our children. It's not going to work for us if our children call other people 'Mommy' and 'Daddy', and only call our name when they want something from us.
We demand that respect from our children and we feel that we are entitled to just that, because the children came from us ... we made them.
It is the same situation with God. He demands total worship from us, because we come from Him. If it weren't for Him, we wouldn't have been alive, or the planet for that matter.
FINISH
Source: The Bible: Exodus 20
Source: The Bible: Exodus 20