I would order them in the same way listed “It is essential to knowing and loving God;” “It is essential for growing up in God;” and “It is essential to serving God” as it presents what I consider a natural progression. Knowing and loving God will fuel both growth and the ability to effectively serve Him.
My other reason for studying the Bible would be to able to acquire the tools to navigate a world dominated by man’s selfish desires at all levels, even among those who describe themselves as Christians.