From H5068; properly (abstractly) {spontaneity} or (adjectively) spontaneous; also (concretely) a spontaneous or (by {inference} in plural) abundantgift: - free (-will) {offering} {freely} {plentiful} voluntary ({-ily} {offering}) willing ({-ly} offering).
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Exo 6:23And Aaron took him Elisheba, daughter of Amminadab, sister of Naashon, to wife; and she bare him NadabH5070, and Abihu, Eleazar, and Ithamar.
Exo 24:1And he said unto Moses, Come up unto the LORD, thou, and Aaron, NadabH5070, and Abihu, and seventy of the elders of Israel; and worship ye afar off.
Exo 28:1And take thou unto thee Aaron thy brother, and his sons with him, from among the children of Israel, that he may minister unto me in the priest's office, even Aaron, NadabH5070 and Abihu, Eleazar and Ithamar, Aaron's sons.
Lev 10:1And NadabH5070 and Abihu, the sons of Aaron, took either of them his censer, and put fire therein, and put incense thereon, and offered strange fire before the LORD, which he commanded them not.
Num 3:4And NadabH5070 and Abihu died before the LORD, when they offered strange fire before the LORD, in the wilderness of Sinai, and they had no children: and Eleazar and Ithamar ministered in the priest's office in the sight of Aaron their father.
1Ki 15:27¶ And Baasha the son of Ahijah, of the house of Issachar, conspired against him; and Baasha smote him at Gibbethon, which belonged to the Philistines; for NadabH5070 and all Israel laid siege to Gibbethon.