Another way to determine as to who would be a true servant of the Lord can 
be found in ISAIAH 8:20 which says: 'To the law and to the testimony: if 
they speak not according to this word, it is because there is no light in 
them.' Trust them not if they say that we need not keep the 10-commandments 
anymore because they supposedly have been nailed to the cross. What most 
don't seem to understand is that only the ceremonial law was nailed to the 
cross, the part of the law that has become obsolete because the daily 
sacrifice at the temple had to stop after Christ, the lamb of God, was 
offered up at the cross once and for all.

So now, how then should we keep the commandments, with what attitude?

Mark 12:30 Love the Lord with all your heart. . . . which is directly 
connected with John 14:15 'If ye love me, keep my commandments'. It was 
Jesus who gave the decalog to Moses at Mt. Siani. Therefore it doesn't 
matter how much we think or say that we love Jesus, our love towards Him 
isn't worth anything unless we keep the 10-commandments because they are a 
transcript of His character. It is just the same for a girl who has a 
boyfriend. His professed love towards her isn't worth anything unless he 
loves her the way she wants to be loved. Jesus clearly said what He expects 
from us if we love Him ". . . keep my commandments". So then we keep the 
10-commandments not to earn our way to heaven (all our righteousness is as 
filthy rags ISA. 64:6) but we keep them to show our love to Jesus.