In Psalm 119, the word, "Word," is used interchangeably with, "law," "commandments," "precepts," "statutes," "judgments," "testimonies."His Word = His law."A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh. And I will put My Spirit within you, and CAUSE YOU to walk in My statutes, and ye shall keep My judgments and do them." Ezek 36:26,27.When His Spirit is within us, we are empowered by His Spirit to obey His Word - His law. And that is what "walking in His Spirit" is all about. The Holy Spirit will never lead us into sin, or, "the transgression of the law." 1 John 3:4.We have abused grace:"I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh, I live by the faith of the Son of God, who loved me and gave Himself for me." Ga 2:20."What shall we say then? Shall we continue in sin, that grace may abound? God forbid. How shall we, that are dead to sin, live any longer therein?" Rom 6:1."Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law." 1 John 3:4.When Moses disobeyed the Lord and struck the rock, God charged him with unbelief. Num 20:12. When the children of Israel disobeyed the Lord, they were not able to enter The Promised Land, because of unbelief. Heb 3:19. Unbelief comes out of an evil heart. Heb 3:12.Disobedience = UnbeliefObedience = FaithRom 16:26 refers to "the obedience of faith.""By faith Abraham...obeyed." Heb 11:8.Jesus said, "Not every one that SAITH, Lord, Lord, shall enter (Rev 22:14) into the kingdom of heaven, but he that DOETH the will of My Father which is in heaven.MANY will say to Me in that day, Lord, Lord, have we not prophesied in Thy name? and in Thy name have cast out devils? and in Thy name done many wonderful works?And then will I profess unto them, I NEVER KNEW YOU: depart from Me, ye that work iniquity." (lawlessness) Mt 7:21-23."And hereby we do know that we know Him, IF we keep His commandments. He that saith, I KNOW HIM, and keepeth not His commandments, is a LIAR and the Truth is not in him. But whoso keepeth HIS WORD, in him verily is the love of God perfected: hereby we do know that we are in Him." 1 John 2:3-5.True faith obeys His every Word - His law. It is not what we SAY, but, what we DO."Blessed are they that do His commandments, that they may have RIGHT to the tree of life, AND MAY ENTER IN through the gates into the city." Rev 22:14.