I Corinthians 10:4

That Rock was Christ.—Simon Peter . . . said, Thou art the Christ the Son of the living God. Upon this rock I will build my church; and the gates of hell shall not prevail against it.—Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.

Full assurance of faith. Faith without wavering.—Faith, nothing wavering . . . He that wavereth is like a wave of the sea driven with the wind and tossed.

He smote the rock, that the waters gushed out, and the streams overflowed.

All our fathers were under the cloud, and all passed through the sea; and were all baptized unto Moses in the cloud and in the sea; and did all eat the same spiritual meat; and did all drink the same spiritual drink: for they drank of that spiritual Rock that followed them: and that rock was Christ.