Since I am at work, I don't have time for a lengthy response, but I want to say this:
God wants us to woo him and him to woo us (referring to the concept of wooing in courtship).
For example, if I were the king of the entire world and anything I desired immediately came to pass, and I saw a woman I wanted for my wife, of course I could just say "I am the king of all. You belong to me. You will be my wife." .... but what kind of marriage would that be? The woman would, out of duty to her king, become his wife (what choice does she have?) but the marriage would be duty, and not love. If, however, the king were to say "I am the king, and I love you, but I want to get to know you. Will you give me the honor of dinner this evening? The choice is entirely up to you, and should you prefer not to join me, I will be sad, but I will not force you to love me. To choose not to love me will result in only one thing: you will forever be not allowed to love me or be anywhere in my kingdom." The woman is given a choice, and clearly is told the benefits (unconditional love) and the detriments (cast out of the kingdom, forced to be alone forever), and if she chooses to marry the King, it will be her choice and not something forced on her. She will most likely fall in love with the king (We're taking about a perfect king... hard not to fall in love with perfection!), and the marriage will be a healthy one.
God is the same way. The scriptures describe us as Christ's "bride" to impress this point to us. God wants to "court" us and win our hand. If he were to just step down from heaven and say "Behold! I am God! You will become my 'Bride' and remain with me forever!" (ie as slaves), he would get obedience (who would dare disobey God knowing the results? Lucifer already did it once, and look at the price he's paid!), but he would not get a loving relationship of intimacy and fellowship that he so desires.
God is, in effect, being a bit coy with us and playing a little "hard to get" to stir a desire for us to pursue his love. Being just like a lover, he draws us with the "hard to get" and when we finally are running full tilt toward him, he turns and runs back at us to take us up fully in his arms, twirl us around, and laugh at the joy of being united as one.
Hope this analogy has helped you to understand.