'God of Israel' in the Bible

Afterward Moses and Aaron came and said to Pharaoh, “Thus says the Lord, the God of Israel, ‘Let My people go, so that they may celebrate a feast to Me in the wilderness.’”

and they saw [a manifestation of] the God of Israel; and under His feet there appeared to be a pavement of sapphire, just as clear as the sky itself.

He said to them, “Thus says the Lord God of Israel, ‘Every man strap his sword on his thigh and go back and forth from gate to gate throughout the camp, and every man kill his brother, and every man his friend, and every man his neighbor [all who continue pagan worship].’”

Three times a year all your males shall appear before the Lord God, the God of Israel.