Kenites

A people who dwelt west of the Dead sea, and extended themselves far into Arabia Petraea. Jethro, the father-in-law of Moses, was a Kenite, and his family accompanied the Israelites, and settled with other Kenites in various parts of the Holy Land, Judges 1:16; 4:11; 1 Samuel 30:29; 1 Chronicles 2:55. Heber and the Rechabites were their descendants. The Kenites of whom we read appear to have known and served Jehovah, and the whole tribe were friendly to the Hebrews. Saul spared them, when sent to destroy the Amalekites among whom they dwelt, Numbers 24:20,21; 1 Samuel 15:6.

Source: ATS Bible Dictionary
Kenites

Smiths, the name of a tribe inhabiting the desert lying between southern Palestine and the mountains of Sinai. Jethro was of this tribe (Judges 1:16). He is called a "Midianite" (Numbers 10:29), and hence it is concluded that the Midianites and the Kenites were the same tribe. They were wandering smiths, "the gipsies and travelling tinkers of the old Oriental world. They formed an important guild in an age when the art of metallurgy was confined to a few" (Sayce's Races, etc.). They showed kindness to Israel in their journey through the wilderness. They accompanied them in their march as far as Jericho (Judges 1:16), and then returned to their old haunts among the Amalekites, in the desert to the south of Judah. They sustained afterwards friendly relations with the Israelites when settled in Canaan (Judges 4:11,17-21; 1 Samuel 27:10; 30:29). The Rechabites belonged to this tribe (1 Chronicles 2:55) and in the days of (Jeremiah 35:7-10) are referred to as following their nomad habits. Saul bade them depart from the Amalekites (1 Samuel 15:6) when, in obedience to the divine commission, he was about to "smite Amalek." And his reason is, "for ye showed kindness to all the children of Israel when they came up out of Egypt." Thus "God is not unrighteous to forget the kindnesses shown to his people; but they shall be remembered another day, at the farthest in the great day, and recompensed in the resurrection of the just" (M. Henry's Commentary). They are mentioned for the last time in Scripture in 1 Samuel 27:10; comp 30:20.

Source: Easton's Bible Dictionary