Luke 1:19-20

The angel replied and said to him. “I am Gabriel; I stand and minister in the presence of God, and I have been sent (by Him) to speak to you and bring you this good news. Listen carefully, you will be continually silent and unable to speak until the day when these things take place, because you did not believe what I told you; but my words will be fulfilled at their proper time.

When we speak against the promises and word of God given to us in doubt, our prayers go unanswered. Death and life are in the power of our tongue, and we need to place a guard over our mouths. If what we want to say isn’t lovely or true, don’t say it. Speaking faith-filled words is vital for answered prayer.