“Set a guard, O Lord, over my lips” (Ps 141:3-4; NKJV). The Bible has so much to say about our speech, it is no wonder that King David, in the verse above, is asking God to help him in this area. The book of Proverbs is replete with wisdom on this subject; for example, kind words deflect anger (Prov 15:1), they are sweet and bring health (Prov 16:24) and wise words are more valuable than riches (Prov 3:14). In Ecclesiastes we are
admonished to think before we speak (Eccles 5:2a) and again in Proverbs warned that “death and life are in the power of the tongue” (Prov 18:21; NKJV) Wow, our words are very powerful!
Jesus also had something to say on this subject. He said that what we speak is a reflection of what is in our heart and He added that on judgment day we will have to explain all of our negative words, and our words will either acquit us or condemn us (Matt 12:33-37). The apostle Paul added to this admonition in Ephesians 4:29 (NLT), “Let everything you say be good and helpful, so that your words will be an encouragement to those who hear them.”
James the brother of Jesus, dedicated 12 verses on how to control the tongue in his epistle (James 3:1-12). In verse 2 of that passage, he says that if we could control our tongues, we would be perfect and of course none of us are perfect because we are human. However, the Holy Spirit can help us in our endeavour to “guard our mouths” (Prov 13:3.) It is a lifelong process but the more we allow the Holy Spirit and the word to influence our lives, the more progress we make.