If the gospel was translated from the original correctly then another word would be Truth It can also mean "Good News"
Gospel Truth
The phrase is never uttered in the Bible. However, because the words in the Bible (and thus, the gospel) is taken as absolute truth, to call something the "gospel truth" is to assure someone that it something is absolutely 100% true.
Getting By - 1993 The Gospel Truth 1-8 was released on: USA: 23 April 1993
Amen - 1986 The Gospel Truth 5-8 was released on: USA: 5 January 1991
All Bible scriptures have authority for Christians. Since Mark's Gospel is also Holy Scripture inspired by God, it too has authority as God's word of truth.
There is no clash between the truth in science and the gospel. All truth is truth wherever it is found. Science is based on investigation as is knowing whether the gospel is true, when both come to the same truth there is harmony.
The Bronx Zoo - 1987 The Gospel Truth 2-7 was released on: USA: 20 April 1988
Jesus was Himself the Gospel and 'the' preacher of the Gospel. He wrote no work or literature but lived what He taught. Others wrote about it later, particularly as they knew the Apostles would eventually die, and also to provide an authoritative record of truth against various heresies which were springing up. The works of the Gospel writers, two of whom were themselves Apostles and two not, were themselves 'Gospels of Jesus' in that they faithfully taught what Jesus said and did. There also were others present who could verify the truth of what was said and eager opponents who could disprove it if wrong.
in Hebrew it would be emet, if you mean the word truth. but if you are asking about truth as in peace it is shalom( which can also mean hello or goodbye)
verifiable truth, reality, actuality, authenticity, certainty, gospel truth, law, verity
Gospel means "good news."