Am I living a lie?. [1 John 4 v20 ]

There are some people like Hitler who are born liars,telling lies is not a thing the Christian should be involved in,those who believe in Him who is the truth,should not tell lies. I suppose most of us would agree with that,and yet consider what John has to say to us from his epistle,/ If a man say,I love God,and hateth his brother, he is a liar.[ 1 Jn 4 v20]/and in fact it is a contradiction as John goes on to say,/for anyone who does not love his brother, whom he has seen, cannot love God, whom he has not seen/.John was called the beloved disciple,and ended his days in Ephesus,and it was said that when he was a very old man, and had to be carried into the fellowship, he would continually say, love one another. Continually in his 1st epistle he stresses the importance of loving one another. In fact the whole epistle stresses love,God is love ,and that who ever lives in love,lives in God, and God in Him[1st Jn 4 v16]. If we are an angry bitter soul with unforgiveness in our hearts,then we are out of fellowship with God. John again stresses ,that whoever loves God must love his brother [4v21]. This loving our fellow Christians is an evidence that we are a true child of God,this love will always forgive,always give,always manifest what love is, as is shown to us in 1st Corinthians 13. When our dear Saviour spoke about loving ,He said it was a commandment, [John 13 v 34-35],it is a telling witness to a world torn asunder by hate,and bitterness.The question is are we keeping this commandment?.
A  prayer...../Dear  God, forgive us for not loving as You love,  grant us the grace to love all we meet,and especially Your dear children in Jesus name Amen /