Deuteronomy 20:1 encourages the Israelites not to fear their enemies because God is with them. Similarly, Joshua 1:9 reassures Joshua of God's presence and commands him to be strong and courageous.
Deuteronomy 20:4 promises that God will fight for Israel against their enemies. This is echoed in Exodus 14:14, where Moses tells the Israelites that the Lord will fight for them during the Exodus from Egypt.
Deuteronomy 20:8 allows those who are fearful to return home from battle. This principle is applied in Judges 7:3 when Gideon is instructed to send home those who are afraid, reducing his army.
Deuteronomy 20:10 instructs offering peace to a city before attacking it. This reflects the value of peace, which is also emphasized in Matthew 5:9, where Jesus blesses the peacemakers.
Deuteronomy 20:19 advises not to destroy fruit trees during a siege, recognizing their value for sustenance. This respect for creation is rooted in Genesis 1:29, where God provides plants for food.