“Now the LORD had said unto Abram, Get thee out of thy country, and from thy kindred, and from thy father's house, unto a land that I will shew thee: and I will make of thee a great nation, and I will bless thee, and make thy name great; and thou shalt be a blessing: and I will bless them that bless thee, and curse him that curseth thee: and in thee shall all families of the earth be blessed.” ‭‭Genesis‬ ‭12‬:‭1‬-‭3‬ ‭KJV‬‬

This is the verse people are talking about when they say that God blesses those who bless Israel.

It’s a biblical notion, but one that many take too far. I highly doubt that God meant “send billions of dollars to Israel’s government and look the other way when they attack US ships”.