Sefirat ha Omer (Counting the Omer) shiur
Pesach night is a special gift called an isruta de leela (an uplifting from above), and after nightfall on the 2nd night we count 49 days later & arrive at Shavuot night where Hashem sends the great gift of Torah down into the world just as he did on Mt. Sinai over 3300 years ago. We do not merely pass through the days between Passover and Shavuot — we accumulate them.
During Sefirat ha Omer we count the days by working on making ourselves into a suitable vessel for the showering of Torah Hashem give us on Shavuot. By working on our character traits during the 49 days we spiritually prepare and refine ourselves.
49 Days of counting 7 Middos (traits). All other traits come from these 7 traits & if you work on them, you are working on all your middos.