A lot of times I walk around my apartment talking to God about anything and everything. However, someone told me that if you do not pray in silence, the devil can take it and run with it. What is your opinion? Are there any biblical references?
This sounds like something superstitious of people isolated from modern society.
Mat 6:7 But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking.
Mat 6:8 Be not ye therefore like unto them: for your Father knoweth what things ye have need of, before ye ask him.
It does not matter if you speak in your mind to God,or you say it out loud,He already knows what things you have need of,before you ask Him,for He already knows the words you will say,before you say them,and the devil surely cannot grab them and run with it.
I think God would prefer if we spoke in audible words to Him,as if we are communicating with a friend we can see,and those that confess Christ the Bible says if they confess with their mouth it is valid.
Of course the Bible also says to sing in your heart,psalms,and praises to God,which God does not mind if we speak to Him in our mind,but I believe He would rather us say the words.
When the man Christ Jesus communicated with God we read that it was always with words spoken to Him.