Gesund = HealthHeit = ness/isGesundheit = [Have] HealthinessTranslator guides/apps: "FATHER LORD JESUS CHRIST WHO ART IN HEAVEN BLESS THIS SICK LAMB AND RID HIM OF HIS DEMONS, BLESS YOU, AMEN!"
“Bless you”, I guess? I just wasn’t expecting a German loan word in that circumstance. And people even seem to pronounce it correctly!
He probably got his Germans in Kindergarten.