Was the Father happy with Israel and Judah before captivity? And what caused them to go into captivity?
And lest thou lift up thine eyes unto heaven, and when thou seest the sun, and the moon, and the stars, [even] all the host of heaven, shouldest be driven to worship them, and serve them, which Yahweh thy Elohim hath divided unto all nations under the whole heaven.
Did they do just that?
And they shall spread them before the sun, and the moon, and all the host of heaven, whom they have loved, and whom they have served, and after whom they have walked, and whom they have sought, and whom they have worshipped: they shall not be gathered, nor be buried; they shall be for dung upon the face of the earth.
Notice they loved, served, walked with, sought and worshipped these things.
Why does Isaiah say this and Amos also?
Your new moons and your appointed feasts my soul hateth: they are a trouble unto me; I am weary to bear [them].
I hate, I despise your feast days, and I will not smell in your solemn assemblies.
Why does he call them Your, not mine... Many say because they were unfaithful and didn't keep them right. But would he not say, you have corrupted my New Moons and Sabbaths (appointed feasts).
How then, did they worship the sun and moon?
Crescent moon is part of the worship of Astarte. But you can look that up. Today the Muslims have a crescent moon on top of their temples. Many look at the crescent and remark about the horns. It was all part of pagan worship. The horns of the crescent being part of the cow worship.
Many today say they have to see the new moon as the first light. Well, that's what the Babylonians did? the first light.
Scripture tells us how they worshipped the sun.
And he brought me into the inner court of the Yahweh's house, and, behold, at the door of the temple of Yahweh, between the porch and the altar, [were] about five and twenty men, with their backs toward the temple of Yahweh, and their faces toward the east; and they worshipped the sun toward the east.
When did they do that? At the first light of the sun. Was that the way they worshipped the moon? Of course they did worship the moon.
Is this at least a part of the reason they went into captivity?
And hath gone and served other gods, and worshipped them, either the sun, or moon, or any of the host of heaven, which I have not commanded;
II Kings 23:5
And he put down the idolatrous priests, whom the kings of Judah had ordained to burn incense in the high places in the cities of Judah, and in the places round about Jerusalem; them also that burned incense unto Baal, to the sun, and to the moon, and to the planets, and to all the host of heaven.
II Kings 17:16
And they left all the commandments of Yahweh their Elohim, and made them molten images, [even] two calves, and made a grove, and worshipped all the host of heaven, and served Baal.
II Kings 21:3
For he built up again the high places which Hezekiah his father had destroyed; and he reared up altars for Baal, and made a grove, as did Ahab king of Israel; and worshipped all the host of heaven, and served them.
Did they count the Holy Days right? Seems not to. Yahweh says He hates THEIR Feast Days.
What happened? They wanted to serve the gods of Babylon, so He sent them into captivity where they got these ideas.