Reading: “And Moses said unto God, Behold, when I come unto the children of Israel, and shall say unto them, The God of your fathers hath sent me unto you; and they shall say to me, What is his name? what shall I say unto them? And God said unto Moses, I Am That I Am: and he said, Thus shalt thou say unto the children of Israel, I Am hath sent me unto you.”—Exodus 3:13–14.
Have you fully considered—in the full assurance of faith—on what the whole foundation of covenant promises and engagements rest? It is not the greatness of the promise, no, nor the greatness of the deliverance worked out for poor sinners, by the blood and righteousness of the Lord Jesus Christ, on which faith founds its claim; for, in fact, the more astonishing, and great, and unexpected the mercy is, as in the case of redemption by the Lord Jesus Christ, the more difficult would it be for a poor self-condemned sinner to trust in it, with full assurance of faith.
The great foundation of the promises for you, and for every poor sinner to ground his hopes on, is the faithfulness of God who cannot lie. The Lord was going to send Moses, as His minister, to bring out His people Israel from Egyptian bondage. Moses desires the Lord to give him His name with the commission to recommend Him to the Israelites as one that they themselves might know and trust in.
To the inquiry of Moses concerning the name by which he should hold Him forth to His people, the Lord condescends to give this answer: I AM THAT I AM, intimating the self-existence, the eternity, and faithfulness of JEHOVAH. As if God had said, I AM, and therefore by virtue of this underived being, which I possess in myself, I give being to all My promises. Call to remembrance this grand and glorious truth. We have not only the perfect and covenant redemption of Christ’s blood and righteousness to confide in, but this other pillar and ground of the truth to confirm our faith—both the blessedness of the promise and the faithfulness of the one promising are engaged in our redemption.