1 Samuel 8:11
And he said, This will be the manner of the king that shall reign over you: He will take your sons, and appoint them for himself, for his chariots, and to be his horsemen; and some shall run before his chariots.
Torrey's Topical Textbook—AKJV

2 Samuel 15:1
And it came to pass after this, that Absalom prepared him chariots and horses, and fifty men to run before him.
Torrey's Topical Textbook—AKJV

1 Kings 1:5
Then Adonijah the son of Haggith exalted himself, saying, I will be king: and he prepared him chariots and horsemen, and fifty men to run before him.
Torrey's Topical Textbook—AKJV