That thou mayest regard discretion, and that thy lips may keep knowledge.
That thou mayest regard discretion, and (that) thy lips may keep knowledge - that they lips may have a discreet and intelligent reply to give to the allurements of pleasure; as, for instance, to those of the "strange woman" (Proverbs 5:3; Proverbs 1:4; Psalms 119:100-101).