|Easton's Bible Dictionary|
(1 Samuel 17:4, 23), properly "the man between the two," denoting the position of Goliath between the two camps. Single combats of this kind at the head of armies were common in ancient times. In ver. 51 this word is the rendering of a different Hebrew word, and properly denotes "a mighty man."
Noah Webster's Dictionary
(v. t.) To furnish with a champion; to attend or defend as champion; to support or maintain; to protect.
Int. Standard Bible Encyclopedia
cham'-pi-un ('ish habenayim): In 1 Samuel 17:4, 23 this unusual expression occurs in the description of Goliath. It means literally "the man of the two spaces," "spaces," or "space between," and is perhaps to be explained by the fact that there was a brook flowing through the valley separating the two armies. In 1 Samuel 17:51 the word champion is the rendering of the Hebrew gibbor, "mighty man."
Champion (7 Occurrences)
1 Samuel 17:4 There went out a champion out of the camp of the Philistines, named Goliath, of Gath, whose height was six cubits and a span. (WEB KJV JPS ASV DBY WBS NAS RSV NIV)
1 Samuel 17:23 As he talked with them, behold, there came up the champion, the Philistine of Gath, Goliath by name, out of the ranks of the Philistines, and spoke according to the same words: and David heard them. (WEB KJV JPS ASV DBY WBS NAS RSV NIV)
1 Samuel 17:51 Then David ran, and stood over the Philistine, and took his sword, and drew it out of its sheath, and killed him, and cut off his head therewith. When the Philistines saw that their champion was dead, they fled. (WEB KJV ASV WBS NAS RSV)
2 Samuel 21:20 And there was again war at Gath, where was a man of great stature, that had on every hand six fingers, and on every foot six toes, four and twenty in number; and he also was born to the giant. (See JPS)
Psalms 19:5 Which is as a bridegroom coming out of his chamber, and rejoiceth as a strong man to run his course. (See NIV)
Isaiah 19:20 And it will be a sign and a witness to the Lord of armies in the land of Egypt: when they are crying out to the Lord because of their cruel masters, then he will send them a saviour and a strong one to make them free. (See NAS)
Jeremiah 20:11 But Yahweh is with me as an awesome mighty one: therefore my persecutors shall stumble, and they shall not prevail; they shall be utterly disappointed, because they have not dealt wisely, even with an everlasting dishonor which shall never be forgotten. (See NAS)