he it is that

Deuteronomy 31:3
The LORD your God Himself will cross over ahead of you. He will destroy these nations before you, and you will dispossess them. Joshua will cross ahead of you, as the LORD has said.

Deuteronomy 9:3
But understand that today the LORD your God goes across ahead of you as a consuming fire; He will destroy them and subdue them before you. And you will drive them out and annihilate them swiftly, as the LORD has told you.

Exodus 13:21, 22
And the LORD went before them in a pillar of cloud to guide their way by day, and in a pillar of fire to give them light at night, so that they could travel by day or night. . . .

Exodus 33:14
And the LORD answered, "My presence will go with you, and I will give you rest."

he will be

Deuteronomy 31:6
Be strong and courageous; do not be afraid or terrified of them, for it is the LORD your God who goes with you; He will never leave you nor forsake you."

Joshua 1:5, 9
No one shall stand against you all the days of your life. As I was with Moses, so I will be with you; I will never leave you or forsake you. . . .

1 Chronicles 28:20
David also said to Solomon his son, "Be strong and courageous, and do it. Do not be afraid or discouraged, for the LORD God, my God, is with you. He will not fail you or forsake you until all the work for the service of the house of the LORD is finished.

Isaiah 8:9, 10
Huddle together, O peoples, and be shattered; pay attention, all you distant lands; prepare for battle, and be broken; prepare for battle, and be dismayed. . . .

Isaiah 43:1, 2
Now this is what the LORD says--He who created you, O Jacob, and He who formed you, O Israel: "Do not fear, for I have redeemed you; I have called you by your name; you are Mine! . . .

Romans 8:31
What then shall we say in response to these things? If God is for us, who can be against us?