I believe many of God's people, if not most, have much ado to "make their calling and election sure." They are not a people to take things for granted; they cannot sit at ease and say, "I have no doubt that I am a child of God;" they want something powerful, something applied, something spoken by the mouth of God himself; and short of that, they must be exercised with doubts and fears as to their state before him.
Now let conscience speak; let us turn over the leaves of conscience. What says that faithful witness? Has God spoken with power to your soul? Has he pardoned your sins? Has he given you a sweet testimony of your interest in the Son of his love? Say you, "Why, I do not know that I can say all that, I do not know that God has pardoned my sins." Well, we will come a little lower then; if you cannot say that, we will take a little lower ground; can you say that you are sighing and groaning and crying at times, not always, but as the Lord works in you, for the sweet manifestations of Jesus' love to your souls? Here is a door open for you, the door of hope in the valley of Achor. Can you come in here? Well, these are marks of being one of God's peculiar people. But you cannot be satisfied, short of God himself making it known to you; you want an immediate testimony from his blessed mouth, and nothing but that can satisfy you, and when he sheds abroad his love in your soul, it will give you peace and comfort, and nothing short of that can.