If your sacrifice does not cost you, do not sacrifice, for your sacrifice already belongs to God.

¹⁰ Listen, daughter, and pay careful attention:
    Forget your people and your father’s house.
¹¹ Let the king be enthralled by your beauty;
    honor him, for he is your lord.
¹² The city of Tyre will come with a gift,^[d]
    people of wealth will seek your favor.
¹³ All glorious is the princess within her chamber;
    her gown is interwoven with gold.
¹⁴ In embroidered garments she is led to the king;
    her virgin companions follow her—
    those brought to be with her.
¹⁵ Led in with joy and gladness,
    they enter the palace of the king.

 There are a few interpretations to this check out:

 http://www.blueletterbible.org/Comm/mhc/Psa/Psa_045.cfm 

I find this interesting because initially i thought that this passage was taking about non-God stuff ! Like when they say people and father's hourse i thought it meant really fathers house.I thought so because it was written in such a manner and they are without CAPS! But after reading the interpretations, maybe it wasn't after all.

⁷ “Listen, my people, and I will speak;
    I will testify against you, Israel:
    I am God, your God.
⁸ I bring no charges against you concerning your sacrifices
    or concerning your burnt offerings, which are ever before me.
⁹ I have no need of a bull from your stall
    or of goats from your pens,
¹⁰ for every animal of the forest is mine,
    and the cattle on a thousand hills.
¹¹ I know every bird in the mountains,
    and the insects in the fields are mine.
¹² If I were hungry I would not tell you,
    for the world is mine, and all that is in it.
¹³ Do I eat the flesh of bulls
    or drink the blood of goats?

After all God commanded the people of Israel to sacrifice and noe God says you dont need to! You are sacrificing for the wrong reasons. Which is so true, no one ever thought about it, like why  would God even want us to sacrifice! Like why? We would He ask us sacrifice something that He created to Him? Right! It is show our heart. I mean, of course He has what He has and we are sacrificing what He has and He own. But sometimes we forget that, we forget that whatever we own is His and sometimes we really forget that! If your sacrifice does not cost you dont sacrifice, for your sacrifice already belongs to God.