And God spake unto Moses, and said unto him, I am the LORD:

Wesley's Notes

6:2 l am Jehovah - The same with I am that I am, the fountain of being and blessedness, and infinite perfection. The patriarchs knew this name, but they did not know him in this matter by that which this name signifies. God would now be known by his name Jehovah, that is, A God performing what he had promised, and so giving being to his promises. A God perfecting what he had begun, and finishing his own work. In the history of the creation God is never called Jehovah, till the heavens and the earth were finished, Gen 2:4. When the salvation of the saints is compleated in eternal life, then he will be known by his name Jehovah, Rev 22:13, in the mean time they shall find him for their strength and support, El - shaddai, a God All - sufficient, a God that is enough.

King James Translators' Notes

the LORD: or, JEHOVAH

Jamieson-Fausset-Brown Bible Commentary

2. And God spake unto Moses-For his further encouragement, there was made to him an emphatic repetition of the promise (Ex 3:20).

Matthew Henry's Concise Commentary

6:1-9 We are most likely to prosper in attempts to glorify God, and to be useful to men, when we learn by experience that we can do nothing of ourselves; when our whole dependence is placed on him, and our only expectation is from him. Moses had been expecting what God would do; but now he shall see what he will do. God would now be known by his name Jehovah, that is, a God performing what he had promised, and finishing his own work. God intended their happiness: I will take you to me for a people, a peculiar people, and I will be to you a God. More than this we need not ask, we cannot have, to make us happy. He intended his own glory: Ye shall know that I am the Lord. These good words, and comfortable words, should have revived the drooping Israelites, and have made them forget their misery; but they were so taken up with their troubles, that they did not heed God's promises. By indulging discontent and fretfulness, we deprive ourselves of the comfort we might have, both from God's word and from his providence, and go comfortless.