Jesus said:

"If two of you on earth agree about anything you ask for, it will be done for you by my Father in heaven" (Matthew 18:19)

"I will do whatever you ask in my name, so that the Son may bring glory to the Father. You may ask me for anything in my name and I will do it." (John.14:13-14)

"If you remain in me any my word remains in you, ask whatever you wish and it will be given you." (John.15:7)

"You did not choose me, but I choose you and appointed you to go and bear fruit... fruit that will last... then the Father will give you whatever you ask in my name." (John.15:16)

"Until now you have not asked for anything in my name. Ask and you wull receive and your joy will be complete."(John.16:24)

"Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. For everyone who asks receives.; he who seeks finds; and to him who knocks, the door will be opened.... how much more will your father in heaven give good gifts to those who ask Him."(Matthew.7:7-8,11)

Paul said:

"Pray in the Spirit on all occasions with all kinds of prayers and requests. With this iin mind, be alert and always keep on praying for all the saints." (Ephesians.6:18)

"Do not be anxious about anyhinh, but in everything, by prayer and petition, with thanksgiving, present your requests to God." (Philippians.4:6)

John said:

"This is the confidence we have in approaching God: that if we ask anything according to this will, he hears us. And if we know that he hears us...whatever we ask...we know that we have what we asked of him." (1 John 5:14-15)

James said:

"The prayer of a righteous man is powerful and effective." (James 5:16)