“But these are written, that ye might believe that Jesus is the Christ, the Son of God; and that believing ye might have life through His name.” (John 20:31)
“These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye believe on the name of the Son of God.” (1 John 5:13)
Amen! No argument there.
But lets add:
2Th 2:15 Therefore, brethren, stand fast, and hold the traditions which ye have been taught, whether by word, or our epistle.
1Th 2:13 "For this cause also thank we God without ceasing, because, when ye received the word of God which ye heard of us, ye received it not as the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe."
How can a man's word be the Word of God unless it is of God i.e. God's Word?