John Trapp on Jeremiah 17:8

Ver. 8. For he ſhall be as a tree planted] It is plain that he here alludeth to Pſal. 1.3. See the Notes there. The laurel, ſaith Pliny, is never thunder-ſtruck. Sure it is, that he who truſteth in God taketh no hurt: his heart is fixed and unmoveable, Pſal. 112.7, 8. to endure things almoſt incredible, Pſal. 27.3. Iſa. 14.32. confer Iſa. 26.4, 5. True Truſt will certainly triumph at length, as that which leaneth on the Lord, and the power of his might, the ſureſt ſupport.

By the river] The Hebrew here is Jubal: and the Jubilee ſaith one, had its name from this word, which ſignifieth a ſtream or watercourſe: as carrying us to Chriſt who is the truth of this type, Luk. 18.19.

But his leaf ſhall be green] Neither falling nor fading.

And ſhall not be careful in the year of drought] A Metaphor ſetting forth the full aſſurance of faith that is in ſome good men, ſuch as was that holy Martyr, who ſaid I will henceforth be Careleſſe according to my name.John Careleſs Act. & Mon. fol. 1743.

Si fractus illabatur orbis, Impavidum ferient ruinae.

Neither ſhall ceaſe from yeilding fruit] As they ſay the Lemmon tree doth not:Theoph. Plin. but ever and anon ſendeth forth new Lemmons, aſſoon as the former are faln down with ripeneſſe.