These first three verses are about the believer’s battle with pride. There is not a believer who does not have a battle with pride in some shape or form.
In our version charity means outgoing love to other people. It distinguishes verse 1 from verse 3: ‘if any man love God’, which is about love directed to God. Love for others deflates pride. By nature self-love accumulates within us; we love ourselves. We admire ourselves, and our knowledge can boost this up terribly. We praise ourselves; we approve of ourselves and our actions. But once we start directing love to others; we stop directing it to ourselves. We look around us, and we appreciate brothers and sisters in the Lord, and even the unsaved when they show certain creditable traits, and do things that should be appreciated.
Look at another believer. He or she may be fairly newly converted. They don't know much; they have not learned many of the great doctrines of the faith yet; they do not have much Christian experience. The great temptation is to feel superior, proud of our knowledge. But then we learn to look even at the very young in the faith, differently, and we say to ourselves, ‘I admire that new Christian, and I admire the praise they give to God, and I admire their complete break with the world. I admire their zeal and their enthusiasm, and their sacrifice: the lengths to which they will go, now that the new life is within them.’ We will start saying to ourselves, ‘How much of that I have lost! How quickly I have grown cold! How little I have the same enthusiasm for witness!’ We praise God for that person, rather than focusing on how little they have learned yet. Or we see another believer and we admire his or her long-suffering and patience. We say, ’I am not as patient as that’, and we forget that we imagine we know more. That person’s unfailing helpfulness for others. Now the church is going to be built up because we are looking at others with appreciation and with affection and with the esteem.
While knowledge is puffing up, outgoing love is getting on participating in the evangelism, attending the prayer meeting, witnessing for Christ, winning souls: building up the church in that way. While knowledge is puffing one up, another is engaging in the work of sanctification, is giving humble counsel and advice to others, and encouragement. Sometimes by witness, sometimes heading off disaster from somebody, saying, ‘I was into that; I did that, and the Lord brought low, and I made a fool of myself, and I failed him, and he forgave me, and I was delivered from that. Don’t get into that brother. I can tell you that is only harmful.’ Knowledge puffs up, but if you couple it with outgoing love, it deflates, and you edify the whole church.