[ENG] Bear witness of Him. what it means?

Shalom! welcome back to Catatan Josephine 😇. What it means actually by bear witness with Christ? some say we became witness when we were there when Jesus made miracles. we saw it. some also say we become witness when we preach the gospel. let's hear what the word of God said about what it means become a witness. God bless 😊 🙏