This lesson is on Matthew 5:33-37, part of "The Sermon on the Mount".  Throughout this famous sermon, the Lord Jesus was attempting to convey to His listeners the fact that everything a citizen of His eternal Kingdom says or does is important to God.  If a Christian is to be an effective witness to this world where fake news, half-truths (which are lies), vain philosophies, false religious, evil cults, and massive deceptions reign, he or she must be a person who guards both his or her heart and tongue to speak only the truth and to keep every vow made to God or man!  God looks with great seriousness on every aspect of our lives! We consider three sections on the matter of "Taking Oaths and Speaking Truth".  First, we look at what the Old Testament says on oath-taking (Exodus 20:7; Leviticus 19:12; Numbers 30:2; Deuteronomy 23:21).  Then we consider what the Pharisees taught on the matter and, finally, compare the Pharisaic teaching with what the Lord Jesus had to say about it.