1 Corinthians 13 is often called the "love chapter" but his theme is actually teaching about the utilitarian nature of the gifts vs the enduring intrinsic value of love. He compares the gifts to children's toys fit only for children:
NIV 1 Cor 13:11 When I was a child, I talked like a child, I thought
like a child, I reasoned like a child. When I became a man, I put the
ways of childhood behind me.
Exercising a gift with no benevolent purpose is merely noise, like banging a drum for no particular purpose and that no one wants to hear:
NIV 1 Cor 13: 1If I speak in the tongues of men or of angels, but do not have love, I am only a resounding gong or a clanging cymbal. 2If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but do not have love, I am nothing. 3If I give all I possess to the poor and give over my body to hardship that I may boast, but do not have love, I gain nothing.
So to get up in a meeting and to start speaking mysteries in Korean when no one in the room speaks Korean is just silliness and rudeness:
NIV 1 Cor 14: 1Follow the way of love and eagerly desire gifts of the Spirit, especially prophecy. 2For anyone who speaks in a tongue does not speak to people but to God. Indeed, no one understands them; they utter mysteries by the Spirit. 3But the one who prophesies speaks to people for their strengthening, encouraging and comfort. 4Anyone who speaks in a tongue edifies themselves, but the one who prophesies edifies the church. 5I would like every one of you to speak in tongues, but I would rather have you prophesy. The one who prophesies is greater than the one who speaks in tongues, unless someone interprets, so that the church may be edified.
6Now, brothers and sisters, if I come to you and speak in tongues, what good will I be to you, unless I bring you some revelation or knowledge or prophecy or word of instruction? 7Even in the case of lifeless things that make sounds, such as the pipe or harp, how will anyone know what tune is being played unless there is a distinction in the notes? 8Again, if the trumpet does not sound a clear call, who will get ready for battle? 9So it is with you. Unless you speak intelligible words with your tongue, how will anyone know what you are saying? You will just be speaking into the air. 10Undoubtedly there are all sorts of languages in the world, yet none of them is without meaning. 11If then I do not grasp the meaning of what someone is saying, I am a foreigner to the speaker, and the speaker is a foreigner to me. 12So it is with you. Since you are eager for gifts of the Spirit, try to excel in those that build up the church.
13For this reason the one who speaks in a tongue should pray that they may interpret what they say. 14For if I pray in a tongue, my spirit prays, but my mind is unfruitful. 15So what shall I do? I will pray with my spirit, but I will also pray with my understanding; I will sing with my spirit, but I will also sing with my understanding. 16Otherwise when you are praising God in the Spirit, how can someone else, who is now put in the position of an inquirer,d say “Amen” to your thanksgiving, since they do not know what you are saying? 17You are giving thanks well enough, but no one else is edified.
18I thank God that I speak in tongues more than all of you. 19But in the church I would rather speak five intelligible words to instruct others than ten thousand words in a tongue.
20Brothers and sisters, stop thinking like children. In regard to evil be infants, but in your thinking be adults.
Prophetic gifts will become irrelevant in the eschaton because the saints will no longer be walking by faith (in the unseen) but rather by sight (in whom they see):
BSB 1 Corinthians 13: 11When I was a child, I talked like a child, I thought like a child, I reasoned like a child. When I became a man, I set aside childish ways. 12Now we see but a dim reflection as in a mirror; then we shall see face to face. Now I know in part; then I shall know fully, even as I am fully known. 13And now these three remain: faith, hope, and love; but the greatest of these is love.
So in the immediate context the "completeness" to come is in the eschaton.