1 Corinthians 3:15-23 New American Standard Bible 1995
15 If any man’s work is burned up, he will suffer loss; but he himself will be saved, yet so as through fire.
16 Do you not know that you are a [a]temple of God and that the Spirit of God dwells in you? 17 If any man destroys the temple of God, God will destroy him, for the temple of God is holy, and that is what you are.
18 Let no man deceive himself. If any man among you thinks that he is wise in this age, he must become foolish, so that he may become wise. 19 For the wisdom of this world is foolishness before God. For it is written, “He is the one who catches the wise in their craftiness”; 20 and again, “The Lord knows the reasonings of the wise, that they are useless.” 21 So then let no one boast in men. For all things belong to you, 22 whether Paul or Apollos or Cephas or the world or life or death or things present or things to come; all things belong to you, 23 and you belong to Christ; and Christ belongs to God.
Nestle-Aland 28 (NA28) 1 Corinthians 3:15-23
15εἴ τινος τὸ ἔργον κατακαήσεται, ζημιωθήσεται, αὐτὸς δὲ σωθήσεται, οὕτως δὲ ὡς διὰ πυρός.
16Οὐκ οἴδατε ὅτι ναὸς θεοῦ ἐστε καὶ τὸ πνεῦμα τοῦ θεοῦ οἰκεῖ ἐν ὑμῖν;
17εἴ τις τὸν ναὸν τοῦ θεοῦ φθείρει, φθερεῖ τοῦτον ὁ θεός· ὁ γὰρ ναὸς τοῦ θεοῦ ἅγιός ἐστιν, οἵτινές ἐστε ὑμεῖς.
18Μηδεὶς ἑαυτὸν ἐξαπατάτω· εἴ τις δοκεῖ σοφὸς εἶναι ἐν ὑμῖν ἐν τῷ αἰῶνι τούτῳ, μωρὸς γενέσθω, ἵνα γένηται σοφός.
19ἡ γὰρ σοφία τοῦ κόσμου τούτου μωρία παρὰ τῷ θεῷ ἐστιν. γέγραπται γάρ· ὁ δρασσόμενος τοὺς σοφοὺς ἐν τῇ πανουργίᾳ αὐτῶν·
20καὶ πάλιν· κύριος γινώσκει τοὺς διαλογισμοὺς τῶν σοφῶν ὅτι εἰσὶν μάταιοι.
21ὥστε μηδεὶς καυχάσθω ἐν ἀνθρώποις· πάντα γὰρ ὑμῶν ἐστιν,
22εἴτε Παῦλος εἴτε Ἀπολλῶς εἴτε Κηφᾶς, εἴτε κόσμος εἴτε ζωὴ εἴτε θάνατος, εἴτε ἐνεστῶτα εἴτε μέλλοντα· πάντα ὑμῶν,
23ὑμεῖς δὲ Χριστοῦ, Χριστὸς δὲ θεοῦ.
I was trying to analyze
(1 Corinthians 3:18) Let no man deceive himself. If any man among you thinks that he is wise in this age, he must become foolish, so that he may become wise.
In order to get a better understanding of “he must become foolish” phrase in (1 Corinthians 3:18)
Could someone please elaborate on the meaning of the “he must become foolish” phrase?