"But be ye doers of the word, and not hearers only, deceiving your own selves."
In Numbers 4, there is a set of key phrases that are repeated. Open your King James Bible and see in verses 1, 17, 21,37, 41, 45, 49. In these verses you'll read that:
"The LORD spake"
"...according to the commandment of the LORD"
"...according to the word of the LORD"
"...as the LORD commanded Moses."
These are all commandments spoken by God to Moses. And, He speaks them to us now. Of course, keeping His commandments are not a way to salvation. Scripture clearly states that ALL have sinned and come short of the glory of God (Rom. 3:23). Salvation only comes through faith in Jesus Christ's death and resurrection (see Rom. 10:9-10). However, Christ taught His disciples, "If you love me, keep my commandments" (John 14:15). Thus, obeying God's word is done out of love and gratitude.
Make no mistake: God's word is not a series of suggestions. They are commandments in the imperative and declarative forms. His words are a light to your path and a lamp unto your feet (Psalm 119:105). They will protect your heart from sin (Psalm 119:11). To know to do good and not do it is sin (James 4:17).
God's word never brings death. Only sin does (Rom. 6:23).
As believers, we're called to be obedient. Think about it. You'll be following the long line of obedient believers, from Abraham to Isaac to Jacob to Joseph to Moses to David to Solomon to Paul and on and on and on. Notice that these men weren't perfect; they simply chose to believe and trust in God. You and I aren't perfect. So, you can add your name to that list, too.
Step out in faith. Psalm 34:8 sums it up nicely: "O taste and see that the LORD is good: blessed is the man that trusteth in him."
Here's how to step out in faith in trusting God with your life: The Plan of Salvation