And when He puts forth His own sheep, He goes before them, and the sheep follow Him: for they know His voice. -John 10:4
Our Savior marks us. It has been very properly observed, that there are two marks on Christ’s sheep. One is on their ear, the other is on their foot. The mark on the ear: “My sheep hear My voice.”The mark on the foot: “I know them, and they follow Me.”
Now, the spiritual ear listens to God. The opening of it is the work of the Holy Spirit, and this is a mark of Christ’s chosen blood-bought people, that they hear not only the hollow sound, but the hidden sense; not the bare letter, but the spiritual lesson; and that, too, not merely with the outward organ, but with the inward heart. The chief point is that they hear His voice.
Christ has marked His sheep on their feet as well as their ears. They follow Him: they are gently led, not harshly driven. They follow Him as the Captain of their salvation; they trust in the power of His arm to clear the way for them. All their trust on Him is stayed; all their hope on Him they lean. They follow Him as their teacher; they call no man “Rabbi” under heaven, but Christ alone…And the sheep of Christ follow Him as their example; they desire to be in this world as He was. It is one of their marks, that to a greater or less degree they have a Christ-like spirit; and if they could they would be altogether like their Lord. ~ C.H. Spurgeon