Should I send this text? Should I make this comment? Should I express this thought? Fewer and fewer people, it seems, even ask themselves these questions—and it’s causing mayhem.

To everything there is a season, a time for every purpose under heaven, wise Solomon wrote. This includes “a time to keep silence” (Ecclesiastes 3:7). Yes, at times the thought on your mind is best left right where it is—unspoken, untexted.

Sadly, this is becoming less and less “common sense.” Our world is faster than ever; news, facts, opinions, judgments, hot takes and reactions circle the world in a blink. People not only say all that’s on their minds, they text, tweet, chat, blog or vlog it too, without hesitation. It’s never a good idea to speak without a filter. Knowing when to keep your mouth closed—or your thumbs off the phone—is a critical life skill. And God has a lot to teach us about it. The Bible brims with admonitions to control what you say, and warnings of the woe you’ll cause if you don’t. This invaluable guidance is doubly true of texting and posting online.

“A fool takes no pleasure in understanding, but only in expressing his opinion” (Proverbs 18:2; Revised Standard Version). Is there any better description of what triggers a majority of social media posts?

If you aren’t restraining your words, God bluntly calls you a fool. “Be not rash with thy mouth …. [A] fool’s voice is known by multitude of words” (Ecclesiastes 5:2-3). “The mouth [or phone] of fools pours forth foolishness” (Proverbs 15:2; New King James Version).

A little thinking, and you quickly discern the wisdom in these proverbs: “He who guards his mouth preserves his life; he who opens wide his lips comes to ruin. … He who restrains his words has knowledge, and he who has a cool spirit is a man of understanding. … He who keeps his mouth and his tongue keeps himself out of trouble” (Proverbs 13:3; 17:27; 21:23; rsv).

This advice is important in what you say and essential in what you text or post. Online, that offhand comment can easily reach ears and eyes you never intended, and cause untold damage to others’ reputation and your own. Schools, employers and others are scrutinizing people’s online fingerprints and making decisions about admissions, hirings and life opportunities accordingly. What you post can live on, and be difficult or impossible to erase. Many people are frustrated to find their lives “coming to ruin” because of ill-considered comments or pictures they posted as teenagers! And face it: Though we all make mistakes, teens are especially prone to saying and doing things they later regret. I’m certainly glad there was no Instagram when I was a teen.

This is one more reason we ought all heed the Apostle James: “[L]et every man be swift to hear, slow to speak [slow to text, slow to tweet], slow to wrath …. If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man’s religion is vain” (James 1:19, 26). Another proverb: “Do you see a man who is hasty in his words? There is more hope for a fool than for him” (Proverbs 29:20; rsv).

Biblical wisdom gets more specific about one area where far too many people have grown far too comfortable letting their opinions fly: criticism and condemnation. School halls echo with it. The Internet swims in it.

When your mind pings with a condemning thought, it is definitely “a time to keep silence”! James says plainly, “Speak not evil one of another, brethren” (James 4:11). The Apostle Paul says we ought to “speak evil of no man” (Titus 3:2).

Ignoring this wisdom destroys relationships, ruins reputations, and adds bitterness and grief to your life. “There is one whose rash words are like sword thrusts, but the tongue of the wise brings healing” (Proverbs 12:18; rsv). Honestly evaluate: Do your words wound, or do they heal?

At the heart of this biblical instruction lies this simple truth: God’s way of life is giving, loving concern for others above self. Satan’s way is get, putting self first. The urge to criticize springs from Satan’s way. You trumpet others’ mistakes or weaknesses to knock them down a notch. You tell that juicy story to feel superior and get a laugh, not even considering whether you have the whole story, how it might hurt the person, whether he or she deserves the courtesy of privacy, or how you would want others to handle it if that unflattering tidbit were about you.

Gossip, rumor and slander have bedeviled all human history—but now they are amplified by smartphones and social media. With the scuttle of thumbs on a little screen, gossipy goodies can resound around the world within seconds. The feeling you get is potent and addictive.

And God hates it. He commands, “Thou shalt not go up and down as a talebearer among thy people …” (Leviticus 19:16)—and with 4G and Wi-Fi, you can “go up and down” without leaving your seat. Even more: “Thou shalt not hate thy brother in thine heart …” (verse 17). God wants you to bridle not just your lips and fingers, but your mind and heart.

Learn the godly wisdom in recognizing “a time to keep silence.” Live the give way. Think on the good and praiseworthy in others (Philippians 4:8). Show kindness and respect. Speak what builds up (Ephesians 4:29)—not what hurts, but what heals.