The prayers of faithful men recorded in Scripture, record them as pleading with Yahweh on the basis of His covenant promises, or the attributes of His character as set forth in His revelation.

Pleading God's Promises

Through the revelation of His word, Yahweh has made promises unto all His servants, and it is legitimate for them to plead His help on the basis of these. Hence:
"And Thou saidst, I will surely do thee good, and make thy seed as the sand of the sea, which cannot be numbered for multitude" (Gen. 32:12).
"Remember the word unto Thy servant, upon which Thou hast caused me to hope" (Ps. 119:49).
"Let my cry come near before Thee, O Lord: give me understanding according to Thy word. Let my supplication come before Thee; deliver me according to Thy word" (Ps. 119:169-170).
"Now, therefore, 0 Lord God of Israel, keep with thy servant David my father, that which Thou hast promised him, saying, There shall not fail thee a man in My sight to sit upon the throne of Israel; yet so that thy children take heed to their way, to walk in My law, as thou hast walked before Me. Now, then, O Lord God of Israel, let Thy word be verified, which Thou hast spoken unto Thy servant David" (2 Chron. 6:16-17).
"Do not abhor us, for Thy name's sake; do not disgrace the throne of Thy glory: remember, break not Thy covenant with us" (Jer. 14:21).
"Remember, I beseech Thee, the word that Thou commandest Thy servant Moses, saying, If ye transgress, I will scatter you abroad among the nations; but if ye turn unto Me, and keep My commandments, and do them .... I will gather them from thence, and will bring them unto the place that I have chosen to set My name there" (Neh. 1:8-9).
"Now, therefore, our God, the great, the mighty, and the terrible God, Who keepest covenant and mercy, let not all the trouble seem little before Thee, that hath come upon us" (Neh. 9:32).