Matthew 24 whole chapter, IF I had to pick but one. We are living what Christ said would be right now. Mark 13 and Luke 21 give second and third witness to what Matthew penned the inspired WORD. But what really establishes the certification/credentials comes from the prophets. Christ continually quoted the prophets. Almost always there is a second witness written down at different time that gives the WORD its 'Inspired' credentials. God has a plan, and He selected who He wanted to write down His plan so that those with eyes to see and ears to hear would heed His warning.
But granted it is also Written that some are placed in a state of slumber for their own protection.
Considering that standard... How is John sacred scripture?
And how would the Septuagent be excluded, since it is referred to in the New Testament countless numbers of times?