Andrew told Simon Peter.
Philip told Nathanael. Who would you tell about our Lord and Saviour Jesus Christ?
“Philip found Nathanael and said to him, “We have found Him of whom Moses in the law, and also the prophets, wrote—Jesus of Nazareth, the son of Joseph.” And Nathanael said to him, “Can anything good come out of Nazareth?” Philip said to him, “Come and see.””
John 1:45-46 NKJV
“Preach the word! Be ready in season and out of season. Convince, rebuke, exhort, with all longsuffering and teaching.”
II Timothy 4:2 NKJV
“For I am not ashamed of the gospel of Christ, for it is the power of God to salvation for everyone who believes, for the Jew first and also for the Greek.”
Romans 1:16 NKJV