That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world – Ephesians 2:12

Without Christ, implies, of course, that you are without the benefit of all those gracious offices of Christ, which are so necessary to the sons of men, you have no true prophet. You may pin your faith to the sleeve of man, and be deceived. You may be orthodox in your creed, but unless you have Christ in your heart, you have no hope of glory. Without Christ truth itself will prove a terror to you. Like Balaam, your eyes may be open while your life is alienated. Without Christ that very cross which does save some will become to you as a gallows upon which your soul shall die. Without Christ you have no priest to atone or to intercede on your behalf. There is no fountain in which you can wash away your guilt; no passover blood which you can sprinkle on your lintel to turn aside the destroying angel; no smoking altar of incense for you; no smiling God sitting between the cherubim. Without Christ you are an alien from everything which the priesthood can procure for your welfare. Without Christ you have no shepherd to tend, no King to help you; you cannot call in the day of trouble upon one who is strong to deliver. The angels of God, who are the standing army of King Jesus, are your enemies and not your friends. Without Christ, Providence is working your ill, and not your good.

Without Christ you are without a Saviour; how will you do? what will become of you when you find out the value of salvation at the last pinch, the dreary point of despair? and without a friend in heaven, you must needs be if you are without Christ. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3472.cfm