From the same as oikodome; to be a house-builder, i.e. Construct or (figuratively) confirm -- (be in) build(-er, -ing, up), edify, embolden.

see GREEK oikodome

a. properly, α. to build (up from the foundation): absolutely, Luke 11:48 G T WH Tr text ; οἱ οἰκοδομοῦντες, a substantive, the builders (cf. Winers Grammar, § 45, 7; Buttmann, § 144, 11), Matthew 21:42; Mark 12:10; Luke 20:17; Acts 4:11 Rec.; 1 Peter 2:7, from Psalm 117:22 (); ἐπ' ἀλλότριον θεμέλιον, to build upon a foundation laid by others, i. e. (without a figure) to carry on instruction begun by others, Romans 15:20; οἰκοδομεῖν τί, Galatians 2:18; πύργον, Matthew 21:33; Mark 12:1; Luke 14:28; ἀποθήκας, Luke 12:18; ναόν, Mark 14:58; passive John 2:20 (on the aorist cf. 2 Esdr. 5:16); οἶκον, passive, 1 Peter 2:5 ((here T ἐποικον), cf. Winer's Grammar, 603 (561), and add ὀικούργειν τά κατά τόν οἶκον, Clement of Rome, 1 Cor. 1, 3 [ET]); (οἰκίαν, Luke 6:48 (cf. Winer's Grammar, the passage cited)); συναγωγήν or οἶκον τίνι, for the use of or in honor of one, Luke 7:5; Acts 7:47, 49 (Genesis 8:20; Ezekiel 16:24); οἰκίαν ἐπί τί, Matthew 7:24, 26; Luke 6:49; πόλιν ἐπ' ὄρους, Luke 4:29. β. contextually equivalent to to restore by building, to rebuild, repair: τί, Matthew 23:29; Matthew 26:61; Matthew 27:40; Mark 15:29; Luke 11:47 and R (L brackets Tr marginal reading) in 48.

b. metaphorically, α. equivalent to to found: ἐπί ταύτῃ τῇ πέτρα οἰκοδομήσω μου τήν ἐκκλησίαν, i. e. by reason of the strength of thy faith thou shalt be my principal support in the establishment of my church, Matthew 16:18. β. Since both a Christian church and individual Christians are likened to a building or temple in which God or the Holy Spirit dwells (1 Corinthians 3:9, 16ff; 2 Corinthians 6:16; Ephesians 2:21), the erection of which temple will not be completely finished till the return of Christ from heaven, those who, by action, instruction, exhortation, comfort, promote the Christian wisdom of others and help them to live a correspondent life are regarded as taking part in the erection of that building, and hence, are said οἰκοδομεῖν, i. e. (dropping the figure) to promote growth in Christian wisdom, affection, grace, virtue, holiness, blessedness: absolutely, Acts 20:32 L T Tr WH; 1 Corinthians 8:1; 1 Corinthians 10:23; τινα, ; 1 Thessalonians 5:11; passive to grow in wisdom, piety, etc., Acts 9:31; 1 Corinthians 14:17; universally, to give one strength and courage, dispose to: εἰς τήν πίστιν, Polycarp, ad Philip. 3, 2 [ET] (yet here to be built up into (in) etc.); even to do what is wrong (A. V. embolden), εἰς τό τά εἰδωλόθυτα ἐσθίειν, 1 Corinthians 8:10 (cf. Winer's Grammar, § 39, 3 N. 3). This metaphorical use of the verb Paul, in the opinion of Fritzsche (Ep. ad Romans, iii., p. 205f), did not derive from the figure, of building a temple, but from the O. T., where "בָּנָה and הָרַס with an accusative of the person (to build one up and to pull one down) denote to bless and to ruin; to prosper and to injure, anyone"; cf. Psalm 27:5 (); Jeremiah 24:6; Jeremiah 40:7 (). (Compare: ἀνοικοδομέω, ἐποικοδομέω, συνοικοδομέω.)

STRONGS NT 3618: οἰκοδόμοςοἰκοδόμος, ὀικοδομου, ὁ (οἶκος, δέμω to build; cf. οἰκονόμος), a builder, an architect: Acts 4:11 L T Tr WH. (Herodotus, Xenophon, Plato, Plutarch, others; the Sept..)