1 John 5:13.   These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God. 1 John 2:3.   And hereby we do know that we know him, if we keep his commandments. 1 John 3:14,18-19,21,24.   We know that we have passed from death unto life, because we love the brethren. He that loveth not his brother abideth in death. ...My little children, let us not love in word, neither in tongue; but in deed and in truth. And hereby we know that we are of the truth, and shall assure our hearts before him. ...Beloved, if our heart condemn us not, then have we confidence toward God. ...And he that keepeth his commandments dwelleth in him, and he in him. And hereby we know that he abideth in us, by the Spirit which he hath given us.