But of that day and hour no one knows, not even the angels of heaven, but My Father only. Matt. 24:36
In the NFL, the referees signify to the coaches and the teams when there is 2 minutes of game time remaining in the first half (2nd quarter) and the end of the game (4th quarter). This lets both teams know there is not a lot of time left to score or to keep the opposition from scoring in an effort to win the game. The defense stiffens because they know that the offense is going to be playing with a sense urgency to score before the 2 minutes elapse.
