Charles Ellicott Commentary Isaiah 38:3

"and said, Remember now, O Jehovah, I beseech thee, how I have walked before thee in truth and with a perfect heart, and have done that which is good in thy sight. And Hezekiah wept sore." — Isaiah 38:3 (ASV)

Remember now, O Lord. —Devout as the prayer is, there is a tone of self-satisfaction in it which contrasts with David’s prayer (Psalms 51:1–3). He rests on what he has done regarding religious reformation, and practically asks what he has done that he should be cut off by an untimely death. The tears may have been less egotistic than the words, and, therefore, were more effective.