en_tn/1jn/05/09.md

If we receive the witness of men, the witness of God is greater

Alternate translation: "If we believe what people say, then we should believe what God says because he always tells the truth.

He who believes in the Son of God has the testimony in himself

Alternate translation: “Whoever believes in Jesus knows for sure he is the Son of God.”

has made him a liar

"is calling God a liar"

because he has not believed the witness that God has borne concerning his Son

"because he does not believe God has told the truth about his Son"