Whoever quarries stones may be injured by them.
Whoever splits wood may be endangered by it. Bible other translations

“quarries stones.” Like the quarrying of stones for Solomon’s Temple (cp. 1 Kings 5:31).

“wood.” The Hebrew word for “wood” is general and therefore ambiguous. It can refer to cutting trees, splitting logs, or just splitting wood even as a task in carpentry, and in fact all those activities involve some danger. The focus of the verse is not on the exact task, but on the uncertainty of life.

Commentary for: Ecclesiastes 10:9