In my bible study this week I read this quote:
"The wise person is obedient to the Word of the Lord. He chooses to build his life on hearing and doing the will of God. When trials and temptations assault him (as they will), he does not fall. He is secure because his foundation is solid. The foolish person, on the other hand, hears the Word of the Lord but does not act on it. He too is inundated with trouble at times and, having no foundation, he collapses.
Obedience is literally foundational to the Christian life. No obedience, no foundation. Unless we are living in obedience to what God says, we have nothing upon which to build our lives, nothing upon which to rest for assurance, and nothing to rely on when we are tested.
The only reliable means of measuring our love for God is to examine whether we obey Him. We may dress the part, act the part, talking the part of being a Christian, but none of these things proves that we genuinely love God. Obedience is the only way."