Charles Spurgeon Commentary Jeremiah 17:3-8

"O my mountain in the field, I will give thy substance and all thy treasures for a spoil, [and] thy high places, because of sin, throughout all thy borders. And thou, even of thyself, shalt discontinue from thy heritage that I gave thee; and I will cause thee to serve thine enemies in the land which thou knowest not: for ye have kindled a fire in mine anger which shall burn for ever. Thus saith Jehovah: Cursed is the man that trusteth in man, and maketh flesh his arm, and whose heart departeth from Jehovah. For he shall be like the heath in the desert, and shall not see when good cometh, but shall inhabit the parched places in the wilderness, a salt land and not inhabited. Blessed is the man that trusteth in Jehovah, and whose trust Jehovah is. For he shall be as a tree planted by the waters, that spreadeth out its roots by the river, and shall not fear when heat cometh, but its leaf shall be green; and shall not be careful in the year of drought, neither shall cease from yielding fruit." — Jeremiah 17:3-8 (ASV)

Oh, the blessedness of confidence in God! You see it here set out in contrast with the misery of trusting in men. Drought comes even to this tree, and times of trouble come to the believer; but the drought does not affect the tree, for it has secret, underground sources from which it sucks up its life; it spreads out its roots by the river.

And blessed is that man who has a secret life, a secret strength, a secret comfort which sustains him in the trying hour. The world cannot perceive it, but he drinks it in, and lives upon it.