Time continues to run between Creation and the Eschaton, as it had come to do in the Old Testament, but now we know the centre of time. The key to the pattern of Creation, and that in which all Creation will be brought together and handed over to God the Father, is Jesus Christ. And, on the other hand, Paul offers the classic discussions, in Colossians, Ephesians and 1 Corinthians, of how all things shall come together in Christ. So when you are confronted with a picture of the Virgin and child, or, as we are here, with Tintoretto's 'Adoration of the Shepherds', the construction and perspective are not used simply to focus your attention upon the child at the middle of the canvas, but they also serve to symbolise the claim that this child is the 'middle' of time. There is a great deal more that could be said, but I shall stop here, within Biblical Time, so to speak.
Time is worth measuring because it comes to something.
And we continue to date our 'common era' from the birth of Christ, observing the subsequent claim, that if time has a meaning, it is because Christ is the centre of time.