Treasury of Scripture Knowledge
And Israel saw that great work which the LORD did against the Egyptians; and the people feared the LORD and believed the LORD and his slave Moses.
Then Moses and the sons of Israel sang this song unto the LORD and spoke, saying, I will sing unto the LORD, for he has triumphed gloriously; the horse and his rider he has thrown into the sea.
Those on the rock are those that when they hear, receive the word with joy, but these have no root, who for a while believe and in time of temptation fall away.
As he spoke these words, many believed in him.