Daniel 9, Matthew 6

[20] Now while I was speaking, praying, and confessing my sin and the sin of my people Israel, and presenting my supplication before the LORD my God for the holy mountain of my God, [21] yes, while I was speaking in prayer, the man Gabriel, whom I had seen in the vision at the beginning, being caused to fly swiftly, reached me about the time of the evening offering. [22] And he informed me, and talked with me, and said, "O Daniel, I have now come forth to give you skill to understand. [23] "At the beginning of your supplications the command went out, and I have come to tell you, for you are greatly beloved; therefore consider the matter, and understand the vision: (Daniel 9:20-23 NKJV)[5] 

"And when you pray, you shall not be like the hypocrites. For they love to pray standing in the synagogues and on the corners of the streets, that they may be seen by men. Assuredly, I say to you, they have their reward. [6] "But you, when you pray, go into your room, and when you have shut your door, pray to your Father who is in the secret place; and your Father who sees in secret will reward you openly. [7] "And when you pray, do not use vain repetitions as the heathen do. For they think that they will be heard for their many words. [8] "Therefore do not be like them. For your Father knows the things you have need of before you ask Him. (Matthew 6:5-8 NKJV)