"For thou, O God, hast proved us; thou hast tried us, as silver is tried." Psalm 66:10

The Lord's dealings with his people in the wilderness are very much to this purpose and to this end--to prove them, and to know what is in their hearts. Has the Lord implanted life in your soul? Has he touched your conscience with his finger? Has he begun a work of grace upon your heart? If so, in your travels through this wilderness there will be things from time to time to prove the reality of this work upon your soul. You will have temptations; now, when temptation comes, it will prove whether you have the fear of God in your soul to stand against the temptation, or whether you fall under the temptation; or, if you fall under the temptation, whether you are ever recovered out of it. And if you are a living soul, the Lord will keep bringing circumstance upon circumstance, event upon event, one thing after another; and all these things, as they come upon you, shall be made to prove whether the fear of God be in your soul or not.

Now, if the fear of God be not in a man's heart, he must decline, he must fall away. Satan will be more than a match for every one except God's own family; sin will overcome and destroy every one but those whose sins are pardoned through atoning blood and dying love; and the world, sooner or later, will overcome every one who has not the faith of God's elect whereby alone the world is overcome.

Thus the Lord, in his mysterious dealings (and how mysterious his dealings are!) proves the reality of the work of grace in every heart where that work is begun, and proves the hypocrisy of all who have but a name to live while their soul is dead before God.