Moses did not react to Golden Calf until he saw it

 Shemos Rabbah (46:01).AND THE LORD SAID UNTO MOSES: HEW THEE TWO TABLES OF STONE LIKE UNTO THE FIRST  Thus it is written, And that He would tell thee the secrets of wisdom. You find that when God said to Moses: Go, get thee down; for thy people hath dealt corruptly , Moses still grasped the Tables in his hand, refusing to believe that Israel had sinned, and saying: ' Unless I see it with my own eyes, I cannot believe it, as it says, And it came to pass, as soon as he came nigh unto the camp, etc.. He did not break them before he had actually seen with his own eyes.--Woe betide those who give testimony on what their eyes have not beheld!--Was it then likely that Moses refused to believe God when He told him ’Thy people hath dealt corruptly? Of course note hears a thing from the most trustworthy source, he must not accept the testimony and act on his word till his own eyes have witnessed it.