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Methos said:
It doesn't say it was disallowed either. God and Abraham were on quite close terms on account of Abraham's righteousness, and I don't think Abraham would do something that was improper in the eyes of God.



This view is too realist. You really don't know what God would say or do. God was very close with the first generation, but he didn't pre-empt Cain's attack on Abel now did he? Nor did Cain consider God's wishes.

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As for whether Hagar really did marry Abraham, I suppose that's just a matter of interpretation.



No, it's a matter of perception. It was noted that Abram had sex with Hagar, but that doesn't mean he married--And not once did it ever say he did either. Throughout the entire Old Testament where she is mentioned, she is never once said to be his wife. Sarah was his only spouse.

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Methos said:
Well, look at it this way. If multiple wives was considered improper in the eyes of God, he would have said so. The men with the multipe wives that I cited were incredibly righteous people. In the Bible, whenever a righteous person does something improper or even commits a sin, God lets them know that they've screwed up, either directly or through a prophet.



Saul, before God spoke to him, wasn't a "righteous person". That junks the standard.

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Since there's no record of God ever doing this to anyone just for multiple marriages, I can only assume that it wasn't anything he had an issue with.



Specious reasoning. I site Cain slaying Abel again--Which would be in conjunction to God sending an angel to stop Abram from killing his son. Plus, those three sins are more heinous than multiple marriage, they're not very good mediators.