Question: "What is the land that God promised to Israel?"
Answer: In regards to the land that God has promised Israel, Genesis 15:18 declares to Abraham, “To your descendants I give this land, from the river of Egypt to the great river, the Euphrates.” God later confirms this promise to Abraham’s son Isaac and Isaac’s son Jacob (whose name was later changed to Israel). When the Israelites were about to invade the Promised Land, God reiterated the land promise, as recorded in Joshua 1:4, “Your territory will extend from the desert to Lebanon, and from the great river, the Euphrates—all the Hittite country—to the Great Sea on the west.”
According to Genesis 15:18 and Joshua 1:4, the land God gave to Israel included everything from the Nile River in Egypt to Lebanon (south to north) and everything from the Mediterranean Sea to the Euphrates River (west to east). So, what land has God stated belongs to Israel? All of the land modern Israel currently possesses, plus all of the land of the Palestinians (the West Bank and Gaza), plus some of Egypt and Syria, plus all of Jordan, plus some of Saudi Arabia and Iraq. Israel currently possesses only a fraction of the land God has promised.