Assurance?

"He that heareth my word and believeth on Him that sent Me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life." John 5:24

"He that believeth on the Son hath everlasting life." John 3:36

"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." I John 5:13