God makes his love available to all who believe in his son Jesus Christ. The document references several Bible verses to support this, including John 3:16 which states that God gave his only son so that all who believe in him may have eternal life. It encourages readers to accept God's gift of love and salvation through faith in Jesus, warning that those who reject him will perish. The Christian life is described as rewarding and exciting for those who diligently seek God and obey his commandments.