Now this is the reason for our confidence: Our conscience testifies that we have conducted ourselves in the world, and especially toward you, with integrity and godly sincerity, not by worldly wisdom, but by the grace of God.
I went up in response to a revelation and presented to them the gospel that I preach among the Gentiles, but privately to those who were held in high esteem, to make sure that I was not running or had not run in vain.
Above all, my brothers, do not swear, neither by heaven, nor by earth, nor by any other oath. But let your “Yes” be “Yes” and your “No” be “No,” so that you will not fall into hypocrisy.