In order to be strong in the Lord’s strength, Christians need to put on the whole armor of God.
The rejection of Jesus by many Israelites is God‘s plan for the salvation of the nations, and even of Israel itself.
As the second Adam and the faithful Israel, Jesus resisted temptation and so can help us when we are tempted.
One of Paul’s purposes in visiting Rome was to receive help to get the gospel all the way to Spain.