In this world we can reach deeper into the soul by hearing than by seeing. But good sight is also important. We see beauty and hear truth.
In Hebrew, beauty, yofi = 100 = 10 squared. Truth, emet = 441 = 21 squared. Together they equal 541, a prime number, the gematria of Israel.
Jacob is truth – "truth to Jacob." Rachel is beauty – "beautiful figure and beautiful countenance." Truth falls in love and marries beauty.
Jacob and Rachel = 420. Truth and beauty = 541 = Israel. 420 & 541 = 961 = 31 (21 & 10, roots of truth and beauty), God's Name El, squared!