Is your heart right with God?

I'm studying on the tongue at the moment.  You know that tiny member of the body that can cause the most damage?  Most people are familiar with the scripture that says:

But those things which proceed out of the mouth come forth from the heart; and they defile the man. For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies: These are the things which defile a man: but to eat with unwashen hands defileth not a man.
(Matthew 15:18-20)

Therefore it's important that our heart is right with God so that what comes out of our mouth will be right with God also.  Ironically enough, the way to get our heart right with God is with the tongue:

That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved. For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
(Romans 10:9-10)

You will be held responsible for every word that comes out of your mouth, even those spoken in the heat of the moment.  That's why it is so important to confess all sin and hide God's Word away in our heart.  If we take the time to fill our heart full of God, then we don't have to worry about what comes out of our mouths during those heated moments.  I know I want to be sure my heart is full of good things, because I want to share good things with others always so I may say:

My mouth shall speak of wisdom; and the meditation of my heart shall be of understanding.
(Psalms 49:3)