Even though I walk through the valley of the shadow of death, I will fear no evil, for you are with me; your rod and your staff, they comfort me.
When I started to think about assurance, I did not think of the 23rd psalm. But of course, it is 100% assurance! David knew God was with him, always. And we have had the miraculous blessing of knowing Jesus Christ! We, like David, have God with us every moment. In addition, we have been promised eternal life with Him; we can endure anything, any fear. There is no stronger or more powerful source of comfort.
God above, your Word is powerful and comforting. You led David, and reassured him. Lead me, Lord, in my quiet life, and help me to have peace and assurance. Amen