In Psalms, I believe most of the time, when the word "law" is used, It is used in the sense of Gods word Not mosaic law.
It would be the same today as if we said we love Gods word, We love his scripture. His letter written to us..
in the KJV the word law used in the psalms is the Hebrew word Torah, it actually means teaching and instruction, the word law was always a bad and incomplete translation....
Actually, if you look at the Hebrew (simple dictionary definitions, I'm no scholar

), many times the Psalms ARE referring to Torah Law, and that is appropriate, as that was the Law (Covenant) in place at the time.
We can take all of those Psalms, including Psalm 119, and view them through the Work of Christ and His New Covenant.
What does Torah actually mean? Law-keepers will be quick to tell us that it is not 'Law', but 'instructions'. Well, in reality, it's not either Law or instructions, but both - instructions that carry penalties for failure to comply which equals Law.
So what is God's Torah (instructions or Law) in the New Covenant?
Believe in Christ and love one another. (John 6:28-29, 1 Jn. 3:23-24)
That's it.
Believe and live (death penalty removed for sin) and be blessed (love = blessings, for others and for us).
It's so brilliantly simple \o/!
NOW go back and read through the Psalms wearing the lens of the Work of Christ and His New Covenant - it all still works (as God knew it would

).
And look through Psalm 119 specifically, using a Hebrew dictionary like
Blue Letter Bible provides, and you'll begin to see that 'word' can mean Scripture, Law, utterance, or CHRIST from this side of the Cross. For instance, in vs. 25, the Hebrew word for 'word' in that verse is 'dabar', which is roughly the Hebrew equivalent to the Greek, 'logos' or 'rhema':
The word dabar means "word" or "talk" in Hebrew.[SUP][1][/SUP][SUP][2][/SUP] Dabar occurs in various contexts in the Hebrew Bible.
In the Hebrew Bible, dabar is sometimes used in reference to the "Divine Word", and in an active sense as a "word event", or prophetic words.[SUP][3]
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In Christianity, the Old Testament concept of "word event" represented by dabar carries over to the New Testament where revelation can be seen asevents explained by words.[SUP][4][/SUP] Hence in the New Testament the word dabar continues to be more than a mere sound, or a doctrine, but refers to people and actions, reaching its climax in the Incarnation of Jesus.[SUP][5]
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The Septuagint, the oldest translation of the Hebrew Bible into Greek uses the terms Rhema and Logos as equivalents and uses both for dabar.[SUP][6][/SUP][SUP][7] (source)[/SUP]
For example, Psalm 119:25 says,
25 I am laid low in the dust;
preserve my life according to your word [dabar].
Who preserves our life? Christ! Everything in God's Word ultimately points to Christ, Who is LIFE \o/!
I keep wondering why these guys keep pointing to Law, which is the ministry of death? (see 2 Cor. 3)
Makes me think of this passage:
39 You study the Scriptures diligently because you think that in them you have eternal life. These are the very Scriptures that testify about me, 40 yet you refuse to come to me to have life. (from Jn. 5)
-JGIG