John Trapp on Proverbs 4:23

Verſ. 23. Keep thy heart] Filth-free, as much as may bee: keep a conſtant counterguard againſt all inroads made by fleſh, world and Devil. Keep the heart alwaies ſupple and ſoluble; for elſe thou canſt not bee long in ſpiritual health. Quod ſanitas in corpore, id ſanctitas in corde. Keep it ever well in tune, and then all ſhall go well. If in a Vio[illegible: 1 letter] I finde the trebble-ſtring in tune, I make no queſtion of the baſe; that goes not out ſo eaſily: So here.

For out of it are the iſſues of life] That is, as of natural, ſo of ſpiritual actions. Hinc [illegible: 1 letter]ons boni & peccandi origo, ſaith Hierome. It is the fountain, Mat. 15.19. the root, Mat. 7.17, 18. the treaſury or ſtore-houſe, Luk. 6.49. the Primum mobil[illegible: 1 letter], the great wheel, the Pharos that commands the Haven, the chief Monarch in this Iſle of Man, that gives Laws to all the Members, Rom. 7. Keep it therefore with all cuſtody, or with all caution: or if the Devil caſt poiſon into it (as hee will) cleanſe it after. It is in vain to purge the ſtream, where the ſpring is defiled: but if the ſpring bee clear, the ſtreams will ſoon clear themſelves.