The magnetic compass was an important advance in navigation because it allowed mariners to determine their direction even if clouds obscured their usual astronomical cues such as the North Star. It uses a magnetic needle that can turn freely so that it always points to the north pole of the Earth's magnetic field.
We cannot be saved by keeping the commandments....“By the deeds of the law no flesh will be justified in His sight” (Romans 3:20). 
“By grace you have been saved through faith, and that not of yourselves; it is the gift of God, not of works, lest anyone should boast” (Ephesians 2:8, 9).
We are saved by the precious blood of Yeshua and obedience to His will. 

To show us the difference between right and wrong. God’s law is like a mirror (James 1:23–25). It points out wrongdoing in our lives much like a mirror points out dirt on our faces. The only possible way for us to know we are sinning is to carefully check our lives by the mirror of God’s law. Peace for confused and wayward world can be found in God’s Ten Commandments. It tells us where to draw the line!