I John 2:3-6 And how can we be sure that we belong to him? By obeying his commandments. If someone says, "I belong to God," but doesn't obey God's commandments, that person is a liar and does not live in the truth. But those who obey God's word really do love him. That is the way to know whether or not we live in him. Those who say they live in God should live their lives as Christ did.
Being saved is more than just saying you are. A true child of God will obey the Word of God. There will be a conscious and determined decision to strive to live according to the teachings of Scripture. There will be a desire to learn and understand the Word so that the Word can have its proper affect on how life is lived. It's not too hard to figure out those who are trying to obey the Lord from those who aren't. The difference between the ways of the Word and the world are like night and day.
One of the sure proofs of a life lived in obedience to God is the love that comes from the heart. We obey God because we love Him. We love Him because it is the natural response of a heart who has been forgiven and filled with the presence of Christ. We love Him because we are so grateful for His forgiveness and willingness to adopt us as His children. We love Him because of His willingness and efforts to change who we were into a people like Him. We love Him because of His loving provision for our needs now and for all of eternity. If we are true children of God, we cannot resist the urge to love Him back, for He first loved us. He sought us out to save us. He is the one who prepared us for the day of our salvation. There is no greater love than the love of God for us and then the growing love we have for God.
He who claims to know God and yet does not love God and obey Him is a liar. The Truth is not in Him. Are you telling the truth when you say that you love God?