The Hebrew bachur refers to a young man in his prime — not merely by age but by vigor, strength, and readiness. The word comes from bachar (to choose/select), suggesting a chosen, select young man. It emphasizes the chosen quality of youthful strength.
Bachur represents the prime of human vitality — the age of greatest strength, readiness, and potential. The Old Testament uses the term in military contexts (Jeremiah 15:8; Amos 8:13) and as a figure of flourishing life. Theologically, the bachur is both a blessing and a responsibility — strength devoted to God is a gift; wasted or perverted strength leads to destruction. Ecclesiastes 11:9 addresses the youth to rejoice — but also to know that God will bring every act to judgment.