God and Man are of the same basic 'kind' - which is evidenced by the fact (not metaphor) that He is our Father, we are His children and we are destined to be raised-up as 'Sons of God'.
Hence we can become, and are enjoined to become, like God.
This is what God deeply desires to accomplish - He yearns for us to become like Him - enough like Him that we may each of us experience (what could be termed) a divine loving friendship with Him: and He with each of us.
But there is a problem...
Or rather, the 'problem' was not a problem - but a reality. The reality that Man's will is free.
Because Man really is an autonomous agent, then man can only be educated, enticed and persuaded; Man cannot (ultimately) be coerced into becoming like God, nor can God-like status be imposed upon Man.
We, personally, each of us as individuals, must consent to becoming like God: more than this, we must actively want to become like God.
So, this was the problem - the reality - confronting God when designing the earth and the basic nature of things.
Everything must work-around free will and autonomous agency as immovable facts.