The lotus flower, which is known for its phenomenal beauty, ironically, needs the thick mud and murk at the bottom of a lotus pond before it can rise unsoiled – cleaned by the dirty water in which it lives – start to open its petals (one-by-one), and bloom in the sun.
Sorrow is often a tuneless, lyricless, and soundless song that countless souls sing. The versions and titles of this kind of song are limitless.
The point Yeshua makes in Mark 7:18-23 is that ceremonial washing is not necessary for spiritual purity or sound spiritual health because unwashed hands do not defile anybody’s “heart”/spirit. It each person’s stinking thinking that spiritually defiles his or her own “heart”/spirit or mind.