John Trapp on Isaiah 26:4

Ver. 4. Truſt in the Lord for ever] To truſt in God, is to be unbottom'd of thy ſelf and of every creature; and ſo to lean upon God, that if he fail thee, thou ſinkeſt.

For in the Lord Jehovah] Heb. for in Jah Jehovah: in him who is the all-powerful Eſſentiator, and faithful promiſe-keeper, &c. Here then, look not downward (ſaith One) upon the ruſhing and roaring ſtreams of miſeries and troubles which run ſo ſwiftly under us; for then we ſhall be taken with a giddineſs, &c. but ſtedfaſtly faſten on the power and promiſe of Jah Jehovah, and ye ſhall be eſtabliſhed.

Is everlaſting ſtrength] Heb. The rock of ages, or the old rock: ſo called of old, Deut. 32, 4, 18, 31. and ſo found to be from the beginning: Et quia in aeternum non mutat aut nutat erga pios, licet montes & colles nutent, Iſa. 54.10. The name of the Lord is a ſtrong Tower, Prov. 18.10. A munition of rocks, Iſa. 23 16. rocks ſo deep, no Pioner can undermine them; ſo thick, no Cannon can pierce them; ſo high, no ladder can ſcale it.