It is written.

The Spirit led Christ into the wilderness to be tested. This trial by temptation was necessary if he was to perservere through all he would face on the way to the cross. The Son’s strength came from his complete identification with the Father. They were One. The devil sought to separate Him from God, as he had done to Adam & Eve in the garden. The temptations Christ faced over his 40 days of suffering made this a real possiblity. But the WORD of God took up the two-edged sword and cut down each lie with “It is written!”

Let us look to Jesus, the founder and perfecter of our faith,
who for the joy that was set before him endured the cross, despising the shame
and is seated at the right hand of the throne of God.
Consider him who endured from sinners such hostility against himself,
so that you may not grow weary or fainthearted. – Hebrews 12:2-3