One of the oldest skulls ever found in North America was examined extensively by scientists. A peculiarity they discovered was that he had spent so much of his life clinching his jaw that his muscles had worn grooves into the bone of his skull. The scientists attributed this peculiarity to the man living a stressful life, which required him to be straining and clenching his jaw continually.
When it comes to God’s call on our lives, we must consider all things in this light. I have heard a dear friend often quoted Isaiah 50:7 when talking about God’s call. This verse says, “Because the Sovereign Lord helps me, I will not be disgraced. Therefore have I set my face like flint, and I know I will not be put to shame.“
Setting your face like flint is a very descriptive phrase. There’s a verse in the New Testament that shows Jesus doing just that. We find this in Luke 9:51, “As the time approached for him to be taken up to heaven, Jesus resolutely set out for Jerusalem.“
Unlike so many things in life, when it comes to being obedient to a purpose our Lord has laid on us, we must set our face like flint, and with our full confidence in the Sovereign Lord, press on.