The glory of the Lord; either this glorious work of God in giving manna; or rather the glorious appearance of God in the cloud, as is evident from Exodus 16:10.
Related Commentaries of Exodus 16:7
Exodus 16:7
7 And in the morning, then ye shall see the glory of the LORD; for that he heareth your murmurings against the LORD: and what are we, that ye murmur against us?