To have two ears and one mouth could mean that practically speaking we should listen more than we speak.
Even in learning a language, we have to listen first before we can reproduce the sounds of the language.
So in order to listen, we have to be silent. It is not that possible to be listening and speaking at the same time.
In the 1st reading, God gave this order to His people: Listen to my voice, then I will be your God and you shall be my people. Follow right to the end the way that I mark out for you, and you will prosper.
But God's people did not listen, they did not pay attention, they followed the dictates of their own evil hearts and turned their backs on God.
So when we don't listen to God, then what we listening to will be the voices from our own corrupted and twisted hearts.
In the gospel, the people saw Jesus casting out a devil, but instead of trying to understand what really happened, some of them said a wicked thing, that it was through the the prince of devils that Jesus cast out devils.
God speaks to us through our experiences, through our encounters with others, and through our prayer and reflections.
May we truly listen deeply so that we will be in union with Jesus and with Him we will speak words that will gather people in the love of God.