Should a man take a vow or make an oath to the LORD…he shall not profane his word. According to all that issues from his mouth he shall do. Reb Mendel of Kossov taught that when a person does not profane their word but upholds the commitments that they make, then the universe also respects what they say and all that issues from his mouth shall be done. This is the meaning of the Talmudical phrase God fulfils the decrees of a righteous person. Being true and loyal to what we say is the first step in “allowing” Hashem to accede to our requests.