John 9 - CSB Apologetics Study Bible

9:6-7 Here and in Mk 7:33-35 Jesus used saliva rather than just his spoken word in healing someone. Spittle was often believed to have medicinal value in the ancient world. God can heal directly or through all kinds of indirect means, including modern medicine (and, occasionally, mud packs). The pool of Siloam is another location, once doubted, that archaeology has confirmed.