Exodus 24
9Then Moses, Aaron, Nadab, and Abihu, and seventy of the elders of Israel went up [the mountainside].
10And
they saw the God of Israel [that is, a convincing manifestation of His presence], and under His feet it was like pavement of bright sapphire stone, like the very heavens in clearness.
11And upon the nobles of the Israelites He laid not His hand [to conceal Himself from them, to rebuke their daring, or to harm them];
but they saw [the manifestation of the presence of] God, and ate and drank.
They saw God!

I know there are places in the Bible where is says no one has lived to see the Lord God.
But they did see God . So...explain this to me please.