From vs 1-12 is such a long read and I may not be able to put them down, but it shows that it talks about the power of the tongue.
If the tongue as small as it can cause so much damage, it means it can cause so much good. So it is wise to take advantage of our tongue by using it properly.
Proper use of the tongue leads to life - so it is imperative we speak God's word concerning a matter only and it shall be well with us.