John Trapp on Isaiah 38:14

Ver. 14. Like a Crane or a Swallow, ſo did I chatter] Ita pipiebam; perapta ſunt ſimilitudines. Broken petitions coming from a broken heart are of ſingular avayl with God, Pſal. 51.17. Ah Pater, breviſſima quidem vox eſt, ſed omnia complectitur, ſaith Luther, i. e. Ah Father, it a ſhort prayer, but very complexive and effectual. So is the prayer here recorded.

O Lord, I am oppreſſed, undertake for me] Miſerere mihi miſero. Tu tuam fidem interpone. Hezekiah though a moſt holy man, begged pardon at his death, and flyeth to Chriſt his ſurety. So did Auguſtine (he prayed over the ſeven penitential Pſalms) and Fulgentius, and Arch-Biſhop Ʋſher. Some render it Pertexe me, weave me out, lengthen my life to its due period.