These two lines are parallel and it is implied that the man in the first line is a wise man. Alternate translation: "The words of a wise man's mouth are deep waters; ... the fountain of wisdom is a flowing stream" (See: [[rc://en/ta/man/jit/figs-parallelism]] and [[rc://en/ta/man/jit/figs-explicit]])
This speaks of a wise man's words being profound as if they were profound and as deep as deep waters. Alternate translation: "The words of a man's mouth are as profound as deep waters" or "The words of a man's mouth are deep and profound" (See: [[rc://en/ta/man/jit/figs-metaphor]])
This speaks of the source of wisdom being plentiful as if it were a gushing spring. The gushing of the spring is spoken of as if it were a flowing stream. Alternate translation: "the source of wisdom is as plentiful as the water of a gushing spring" (See: [[rc://en/ta/man/jit/figs-metaphor]])