Read Matthew 5:33-37
“Just say a simple, ‘Yes, I will,’ or ‘No, I won’t.’ Anything beyond this is from the evil one.” Matthew 5:37 (NLT)

Jesus is encouraging us not to let our pride cause us to over-promise, to try to sound more powerful than we really are, but to build our lives on a firm but humble foundation, where what we say can be depended upon. Let us acknowledge our dependence upon God for results, and let us be people of the truth, whose ‘Yes’ means ‘yes’ and ‘No’ means ‘no’.