The tongue can be tamed by no man

Even so the tongue is a little member, and it can boast of great things. See how much wood or how great a forest a tiny spark can set ablaze! And the tongue is a fire. [The tongue is a] world of wickedness set among our members, contaminating and depraving the whole body and setting on fire the wheel of birth (the cycle of man's nature), being itself ignited by hell (Gehenna). For every kind of beast and bird, of reptile and sea animal, can be tamed and has been tamed by human genius (nature). But the tongue can be tamed by no man. It is a restless (undisciplined, irreconcilable) evil, full of deadly poison. With it we bless the Lord and Father, and with it we curse men who were made in God's likeness! Out of the same mouth come forth blessing and cursing. These things, my brethren, ought not to be so. James 3:5-10 AMP

The Message Bible puts it this way

A word out of your mouth may seem of no account, but is can accomplish nearly anything - or destroy it! It only takes a spark, remember, to set off a forest fire. A careless or wrongly placed word out of your mouth can do that. By our speech we can ruin the world, turn harmony to chaos, throw mud on a reputation, send the whole world up in smoke and go up in smoke with it, smoke right from the pit of hell. This is scary: You can tame a tiger, but you can't tame a tongue - it's never been done. The tongue runs wild, a wanton killer. With out tongues we bless God the father; with the same tongues we curse the very men and women he made in his image. Curses and blessings out of the same mouth! My friends, this can't go on. James 3:5-10 The Message

These scriptures speak for themselves. I don't know how well-behaved your tongue has been this week, but I do know that mine has definitely had some 'moments'! Thankfully we have a God of grace, Who, when we come to Him and humble ourselves, asking forgiveness for our sins, is willing and able to forgive us.

But He gives us more and more grace (power of the Holy Spirit, to meet this evil tendency and all others fully). That is why He says, God sets Himself against the proud and haughty, but gives grace [continually] to the lowly (those who are humble enough to receive it). James 4:6 AMP

Let's pray, Heavenly Father, please forgive us for the words that come out of our mouths that aren't edifying to you and others. Please help us to take every thought captive into the obedience of Christ. Holy Spirit please help us to put a guard over our mouths when we don't take our thoughts captive. Thank you that your grace is sufficient when we do sin. Please help us to humble ourselves and come to you for forgiveness and make amends with whoever we have hurt with our words. Thank you for giving us Jesus, so we can still be in right-standing with you, even though we continue to sin. Amen

For just as by one man's disobedience (failing to hear, heedlessness, and carelessness) the many were constituted sinners, so by one Man's obedience the many will be constituted righteous (made acceptable to God, brought into right standing with Him). Romans 5:19 AMP