God Himself is not objective, but as His will is the Absolute will, His morality is the Absolute morality. It is therefore objective from our perspective.
But God's words (which translate his morality) is rather subjective. Let's take a look at the 10 commandments.
1. Thou shalt have no other gods before me.
- So does this mean we can have other Gods below you? And equal to you?
2. Thou shalt not make unto thee any graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth:
-Does this mean clouds? Rocks? plants? Animals? Fungus? Fish? etc...
I mean, does this mean that we can't make any pictures of anything that exists anywhere except on the land?
Or does it mean Angels, the pearly gates, hell, etc...? And what is that "in the water under the earth"? Does he not want us to take pictures of wells?
3. Thou shalt not take the name of the Lord thy God in vain; for the Lord will not hold him guiltless that taketh his name in vain.
-Who is to say what is or isn't in vain? God surely isn't giving instructions on the subject.
4. Remember the sabbath day, to keep it holy.
-Ok, so which day is the sabbath? We say it's Sunday but how do we know that's really the say? Is it an arbitrary day out of the 7 day week that we chose? Or did God say "Today is the Sabbath. Start here"?
5. Honour thy father and thy mother: that thy days may be long upon the land which the Lord thy God giveth thee.
-How do should one honour thy father and thy mother? Probably however you feel they would want. Many claim this is a "do what your parents tell you" but what if they tell you to sin? Should you honour them? Or should you stop them and that honours them by helping to save them from sin?
6. Thou shalt not kill.
- This is a big one. Does it mean end a life? Does the animals we eat, the plants we harvest count? Does hunting for sport but not food/clothing count? What about the bugs we kill by accident or on purpose? Or what about all the bacterial that our bodies kill on a daily basis?
Or does it mean only intentional kills?
Or does it mean only intentional kills between humans?
And if it's only intentional kills between humans, what about in self defense? Or defense of your homeland? Or defense of God? Or when God says to do it?
7. Thou shalt not commit adultery.
-Does that mean I can't have that 3some?
8. Thou shalt not steal.
-Sure taking directly from a person is stealing but what else? What about more abstract terms like legal loopholes and high taxation and copying data from someone's computer? Or their identity? Do those count?
9. Thou shalt not bear false witness against thy neighbour.
-What if it saves his life? If I were to tell the truth about my neighbour and it causes him to be murdered, am I guilty of allowing it or does God give me a pass because I followed his commandments?
10. thou shalt not covet thy neighbour's wife, nor his manservant, nor his maidservant, nor his ox, nor his ass, nor any thing that is thy neighbour's.
-So now God is telling us we can't even want something? What if my neighbour is selling it or will sell it?
I don't know about you but it seems subjective to me.