The shabbos before Pesach is known as shabbos hagadol, or the 'great' shabbos.
What is so "great" about this shabbos ?
It is said that shabbos is actually above time and that the world was created for the short duration of six days. On shabbos, all creation is recharged, getting it set for another week. Shabbos, however, is outside of this calculation and exists in a sublime, timeless nature. Thusly, shabbos has the unique double distinction of being both the culmination of the preceding week and the foundation of the following week.
Since shabbos serves as the flashpoint of recreation, it must follow that everything which is needed for that week will also be created on shabbos.
Now we understand what is so "great" about shabbos haGadol – on shabbos hagadol the act of recreation is greater than other times since it needs to also include the incredible holiday of Pesach.
The first night of Pesach is known as 'leil shimurim' a night that we are watched over. On that night the level of Hashgacha pratis or personal divine guidance and care is at its highest point of the year. On that night Hashem personally 'passed over' each one of our houses in dealing destruction upon the Egyptians – He even struck down any Egyptians who may have been hiding in our very own homes ! Divine involvement on such an intense, personal level, is sure to leave a mark in time – as it did on seder night.
So this shabbos, as we sing testimony to Hashem's (re)creation of the world and palpably feel the rejuvenation of all that surrounds us – know that this shabbos is truly greater than others, it is the shabbos where the divine presence descends into our world in greater force than any other time during the year. And since seder night is a full week away, we have this extra hasgacha for a full eight days. That's pretty great!
With Hashem's guiding hand ever closer, we must ask ourselves, what are we going to do with such an amazing opportunity ?