Do not be hasty in word or impulsive in thought to bring up a matter in the presence of God. For God is in heaven and you are on the earth; therefore let your words be few. (NASB)
Don't shoot off your mouth, or speak before you think.
Don't be too quick to tell God what you think he wants to hear.
God's in charge, not you -- the less you speak, the better. (Message)
Be not rash with your mouth, and let not your heart be hasty to utter a word before God. For God is in heaven, and you are on earth; therefore let your words be few. (Amplified)
Don't be so quick with your words and hasty in heart to rattle on to the Lord. Slow down, enter into His presence, and listen to what he tells you. He is the God of heaven, therefore you should listen to Him more than You speak.
Have a listening time to the Lord right now before I go rattling off to Him and to other people.