Rejoicing in hope; patient in tribulation; continuing instant in prayer… – Romans 12:12

To make you instant in prayer endeavour eagerly to desire the good thing. Stand not before God if thou wouldst win at His hands as one who will be content whether or no. Say not “Give it or withhold it, it is all one to me. I knock at Thy door, and if Thou open I will be somewhat pleased, but if Thy door be shut I will be pleased too.” Oh no; such listlessness will never prevail with God. There are times when you must be brought to this condition that you will not be denied. There is a holy “impudency,” as the Puritans were wont to call it, to which we must be brought, in which we shall with holy boldness dare to say like Jacob, “I will not let Thee go, except Thou bless me.” Such language would be blasphemy if it were not permitted, it would be presumption if it were not encouraged; but there is little fear of our being too bold, for in these times men are more inclined to keep at a distance than to come too near. We are permitted to use the liberty of obedient, loving children. We are allowed in the holy confidence of faith to resolve that we will seek until we find, we will ask until we receive, we will knock until the door is opened unto us. Our case is urgent, and we must needs press it till our suit is gained. Never was a man brought to such a pass by the grace of God but what speedily the Lord was pleased to open the hand of His liberality and give him according to his desire; but this vehemence must be manifested…Prayer must be heart work, soul work, spirit work. Prayer ought to be the sweat of the soul, it should sometimes be even as the bloody sweat of an agonizing heart, crying mightily unto the Lord, as Jesus did in the garden. To such the Lord sendeth down His angel to strengthen them or in some way heareth their pleadings in that concerning which they were filled with anguish. Intensity of desire must be exhibited… ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1480.cfm