What people usually mean
People usually use virtue signaling to describe someone who makes a visible show of caring about a good cause, but may be more interested in appearing compassionate, righteous, or socially acceptable than in helping. The phrase can describe a real temptation, yet it can also become an easy way to dismiss another person's sincere concern.
Only God sees the heart completely. When Samuel was choosing Israel's next king, God taught him not to judge as people do by outward appearance, because God looks on the heart (1 Samuel 16:7). That should make Christians slow to assign motives to others.
But the Lord said unto Samuel, Look not on his countenance, or on the height of his stature; because I have refused him: for the Lord seeth not as man seeth; for man looketh on the outward appearance, but the Lord looketh on the heart.
Jesus cares about the motive
Jesus warned his disciples not to practise righteousness in order to be noticed. He spoke specifically about giving to people in need, praying, and fasting, all good things that can become performances when human admiration is the goal (Matthew 6:1-4; Matthew 6:5-6; Matthew 6:16-18). The problem was not generosity or prayer. It was seeking the audience's reward instead of the Father's.
Jesus also challenged religious leaders whose actions drew attention to themselves while their hearts were far from the weightier matters of God's law, including judgement, mercy, and faith (Matthew 23:5-7; Matthew 23:23). God is not impressed by a polished image without a merciful life.
Take heed that ye do not your alms before men, to be seen of them: otherwise ye have no reward of your Father which is in heaven.
Visible goodness is not automatically false
Jesus did not tell his followers to hide every good act. He said their light should shine before others so that people may see good works and give glory to the Father (Matthew 5:16). There is a difference between being seen while serving and serving in order to be seen. One points beyond itself to God, while the other turns attention back towards the self.
Sometimes speaking openly about justice, generosity, or faith can encourage others to act with love. Paul urged Christians to consider one another rather than acting from strife or vainglory, and to value others above themselves (Philippians 2:3-4). The question is not simply, “Is this public?” It is, “Whom does this serve?”
A gentler way to respond
When you notice the temptation in yourself, bring it honestly to God. You might choose a quiet act of generosity, listen before speaking, or keep serving when nobody notices. Jesus taught that the Father sees what is done in secret, so hidden faithfulness is never wasted (Matthew 6:3-4).
When you suspect it in someone else, resist cynicism. James says that faith shows itself in practical care for people who lack food and clothing (James 2:14-17). Instead of policing appearances, look for ways to join real acts of mercy. A humble life of love will say more than a carefully managed reputation.