Let your statement be, “Yes, yes,” or “No, no”; anything beyond these is of evil. (Matthew 5:37)
Jesus says integrity for the Christian should be a case of the normals.
The Pharisees had twisted Old Testament teaching about oaths and vows to the Lord. The idea they developed was that if God’s name was used in my oath, God became a partner in the transaction; if God’s name was not used in my oath, then I am free to “change my mind.” Swearing became a pathetic attempt at lying. It was more of a confession of dishonesty than integrity. The Pharisees had reduced the law of oaths to a game of rules on how to break a promise and get out of what you said you were going to do.
Do you hear the response of Jesus? “But I say to you, make no oath at all, either by heaven, for it is the throne of God, or by the earth, for it is the footstool of His feet, or by Jerusalem, for it is the city of the great King…” (Matthew 5:34-35).
You cannot separate life into little compartments, some having to do with God and others not. Everything about you represents Him! If you say you are a Christian, what people think about you will have everything to do with what they think about your God. When truth is profaned, the God of truth is profaned.
But what about “white lies”—lies that “do no harm?” Is it possible for lies not to harm? No—they eat away and eventually destroy your name… and thus profane His.
Is your integrity such that your “yes” is as good as an oath, and so is your ”no?”