“Behold! The Lamb of God who takes away the sin of the world!” – John 1:29
Take your eyes off everything else and behold the Lamb of God! You need not see anything else, nothing else is worth seeing; but behold Him. See how He takes your guilt, see how He bears it, see how He sinks under it, and yet rises from it, crying, “It is finished.” He gives up the ghost, He is buried, He rises again from the dead because He is accepted of God, and His redeeming work is done. Trust Him, trust Him, trust Him. “Look and live,” is now our nosegay; not “do and live,” but “live and do.” If you ask how you are to live, our answer is look, trust, believe, confide, rest in Christ, and the moment you do so, you are saved.
When John said to his disciples, “Behold the Lamb of God!” It was a hint that they should leave off at John, and turn their attention wholly to Jesus, and follow Him. Hence, we find that John’s two disciples left him, and became the disciples of Christ. Beloved, we who preached long to have your attention, but when you give your attention to us, our longing then is to pass it on to Christ our Lord. Look on Him, not us. What can we do, poor creatures that we are? Look unto Him, mark His footsteps, tread in them. Do as He bids you, take Him for your Lord, become His disciples, His servants. Behold the Lamb of God, and always behold Him. Look to Him, look up to Him, and follow where He leads the way. ~ C.H. Spurgeon
https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2329.cfm