Kabbalah su I Re 1:1

Happy are the penitent, who in one hour, one day, one moment, get as close to the Holy One, blessed be He, as most righteous come to the Holy One, blessed be He, over several years. Abraham did not come into the supernal days until he was old, as has been explained. Neither did David, as it is written, "Now King David was old, advanced in years (lit. 'coming with the days')" (I Kings 1:1). But a penitent comes right in and cleaves to the Holy One, blessed be He.