"The LORD will fulfill his purpose for me;
Your steadfast love, O LORD, endures forever.
Do not forsake the work of Your hands." Psalm 138:8 (ESV)
"'Let your speech be Yea, yea, Nay, nay.' This is not to say that the disciples are no longer answerable to the omniscient God for every word they utter, it means that every word they utter is spoken in His presence." Dietrich Bonhoeffer, The Cost of Discipleship, p.153