“We have seen and do testify.”
True testimony flows from personal experience with Christ. Just as the apostles saw, heard, and touched Jesus—and were fully convinced He was the Son sent to save—so must we have a spiritual encounter with Him. Mere outward contact or hearsay is powerless; only a heart changed by Christ can faithfully testify of Him.
“Go home to your friends and tell them how much the Lord has done for you, and how he has had mercy on you.”
— Mark 5:19 (ESV)