Jesus is indicating that the time is now. And though what is taking place in his coming has been promised in the past, the present is what matters. And, although the future is promised by God, the present is what matters.
The past is remembered, and the future is hoped for, both important concepts for faith.
But, it is the present, this moment, that is of utmost significance and urgency. This is why Jesus calls us to repent and believe. Now is the moment of salvation, and now is the opportune time to repent and believe.
But many of us live most of our lives in the chronos, the time that moves on. We move with time, or perhaps we allow time to move us, and we allow chronos to dictate how we live our lives. To a great extent, we allow chronos to devour us.
Jesus, however, calls us to live in the kairos of God’s rule, in this moment, seeking and searching for God with each breath we take and with each moment that passes.
Living in the kairos of God carries with it an emphasis on being in the present.