Command and Promise (LC III 12-23)
Let this be the first and most important point, that all our prayers must be based and rest upon obedience to God, regardless of who we are, whether we are sinners or saints, worthy or unworthy. We must know that God will not have our prayer treated as a joke. But He will be angry and punish all who do not pray, just as surely as He punishes all other disobedience. Furthermore, He will not allow our prayers to be in vain or lost. For if He did not intend to answer your prayer, He would not ask you to pray and add such a severe commandment to it.
In the second place, we should be more encouraged and moved to pray because God has also added a promise and declared that it shall surely be done for us as we pray. He says in Psalm 50:15, “Call upon Me in the day of trouble; I will deliver you.” And Christ says in the Gospel of St. Matthew, “Ask, and it will be given to you; … for everyone who asks receives” (7:7–8). Such promises certainly ought to encourage and kindle our hearts to pray with pleasure and delight. For He testifies with His own Word that our prayer is heartily pleasing to Him. Furthermore, it shall certainly be heard and granted, in order that we may not despise it or think lightly of it and pray based on chance. (17-20)
https://open.spotify.com/episode/49jDqp3FWe5V5gLHI7mR5D?si=3ctvYinBTP6d807ylu7jcQ