A primitive root; to impel; hence, to volunteer (as a soldier), to present spontaneously -- offer freely, be (give, make, offer self) willing(-ly).
H5068. nadab
נָדַב verb incite, impel (Late Hebrew id.; Arabic call impel, incite ( be noble, willing, Generous is denominative from [ compare] נָדִיב according to BaNB § 125 e); VIII. ready, willing; Assyrian nidbu, freewill-offering DlHWB 448; Aramaic נְדַב be willing Pa`el, Ithpa`al; Zinjirli נדב inciting, instigation DHMSendsch. 60); —
Qal Perfect3masculine singular נָדַב Exodus 35:29; 3feminine singular נָָֽדְבָה 35:21; Imperfect3masculine singular suffix יִדְּבֶנּוּ 25:2; — לִבּוֺ נָדַב אֲשֶׁר 25:2 whose heart incited compare 35:29; subject רוּחַ 35:21 (all P).
Hithpa`el Perfect1singular הִתְנַדַּבְתִּי 1 Chronicles 29:27; 3masculine plural הִתְנַדְּבוּ Ezra 2:68; 1 Chronicles 29:9; Imperfect3masculine plural יִתְנַדְּבוּ 29:6; Infinitive הִתְנַדֵּב Judges 5:2 2t.; הִתְנַדֶּבֿ 1 Chronicles 29:17; sf הִתְנַדְּבָם 29:9; Participle מִתְנַדֵּב Ezra 3:5 + 2.t.; plural מִתְנַדְּבִים Judges 5:9; Nehemiah 11:2; —
1 volunteer for war Judges 5:2, 9; for service of other kinds 2 Chronicles 17:16; Nehemiah 11:2.
2 offer freewill-offerings for the first temple 1 Chronicles 29:5-6, 9 (twice in verse); 29:14, 17 (twice in verse); for the second Ezra 1:4; 2:68; 3:5 (compare Biblical Aramaic).