As a child who often spoke first and thought later, the taste of soap became a regularity. Had it really done its job, this mouth would have been antiseptically clean. However until that antiseptic, called the Holy Spirit, did His work this mouth continued and will continue to exude that which dishonors and defames because “It is not what enters into the mouth that defiles the man, but what proceeds out of the mouth, this defiles the man.” [Matt 15]
God has given us His divine power pertaining to life and godliness, but also with that comes responsibility, a responsibility that without Christ would be burdensome. But, Christ said, my yoke is easy and my burden is light. Christ can carry the yoke by himself but two are better than one because they have a good return for their labor. [Ecc 4].
If our salvation is so great why do we not live like it? We say, oh yes, I have this temper you understand, just accept me as I am. Saying that means we do not understand the depth of grief we cause the indwelling Holy Spirit or how deeply we quench His power. Perhaps that is why Paul wrote: let no unwholesome word (sapro = rottenness) proceed from your mouth. In other words, not just wash that mouth with soap but with the holiness that has been imparted to you so that you are edifying not corrupting.
Here’s where we need to end up: Psa 141:3 Set a guard, O Lord, over my mouth; Keep watch over the door of my lips.