Because you are a Christian, your life or to be permeated with truth. When you were born again, God put the Spirit of truth in you. The Spirit’s role is to guide you into all truth. The Spirit wants to fill your mind with whatever is true (Phil 4:8). If you allow the Spirit to fill you with God’s truth, you will be truthful in your actions and in your relationships. According to Jesus, this means that your yes will always mean yes, and your no will always mean no. The world considers truth optional. Deception permeates every corner of society because the prince of this world is the author and father of lies. The world will tempt you to compromise the truth. What you say reflects what is in your heart. If your heart is filled with deception, your mouth will speak falsehood. Ask God to permeate you with His truth so that you will find falsehood, in any form, abhorrent.