Following are a number of back-translations as well as a sample translation for translators of Proverbs 19:21:

• Kupsabiny: “There are many things a person plans,
  but all those things stand/depend on God in order to succeed/come to pass.” (Source: Kupsabiny Back Translation)
• Newari: “People have various plans in their hearts.
  But only the Lord’s plan will be carried out.” (Source: Newari Back Translation)
• Hiligaynon: “We (incl.) have many plans, but the will of the LORD is the one that will-be-fulfilled.” (Source: Hiligaynon Back Translation)
• Kankanaey: “Many are a person’s plans, but it is God who causes-to-be-fulfilled what he decided/determined will happen.” (Source: Kankanaey Back Translation)
• English: “People plan to do many kinds of things,
  but what will happen is what Yahweh has decided will happen.” (Source: Translation for Translators)