Blessed are they that keep his testimonies. That serves him with their whole heart. – Psalms 119:2
When you get a passion, you search it; you think of it often and always are happy to be involved in it.
If we make Jesus our passion we will be able to know him better and to serve Him wholeheartedly because he is our passion. When we do this in order with His laws we will be blessed for following His will.
When you make Jesus your passion, it is easier to see that you are also His.