What does the image of a lion tell us about Judah's descendant?
The lion is considered as the king of the jungle, therefore, so the image of the lion here depicts the all powerful nature, strong invincible, fearless fighter and ruling over all
How does Jesus qualify for the promise of the ruling scepter?
I believe the staff is a symbol of sovereignty and authority, so Jesus qualifies because he is the King of Kings referred to in the scripture quoted in the text Philippians 2:10-11
He qualifies because he managed to conquer all. In particular I am reminded of his victory over sin as well as the nature of bringing lost sheep to the fold. A passage that comes to mind is where Paul describes the struggle to do good but sin appears to prevail (Romans 7:15-25). In the last verse I think, there is an acknowledgement that only through Jesus can one win this battel between desires of the flesh and what is right
Why is obedience so hard for us?
Uhm obedience is hard mainly because of lack of faith or trust. Very often we want to be in charge and rely on our abilities, which unfortunately are limited. In difficult circumstances I tend to forget God's promises of Fear not I am with you.
Why is it so important for us?
Obedience is important because in obeying you surrender all and not have to worry. When we obey we are assured of Devine protection