you may be surprised to know that many
people think that they are ( followers of Yeshua ) Christians but are yet to confess Him publicly as their own, Lord ( to obey and to follow ) and Savior.. Romans 10... vss8+ I did not do this for decades ...The ONE Lord IS The Lord of heaven and earth.
Is The Lord of heaven and earth OUR Lord???
Yes or No.
Christians do NOT have a Lord. They have The ONE and ONLY Lord.
The ONE Lord does NOT have a greater Lord.