Introduction

Nahum (whose name means "comforter") was from Elkosh and acted as a prophet of God who spoke an oracle about Nineveh.

God is Jealous and Avenging

A jealous and avenging God is the Lord,
the Lord is avenging and wrathful;
the Lord takes vengeance on his adversaries
and rages against his enemies.

Nahum 1:2-3 clearly repeats themes already addressed in Exodus 20:5, Exodus 24:14, Deuteronomy 4:24 and Joshua 24:19 that He is standards of behaviour - in action and thought, natural and spiritual. He proclaims that He is a holy and jealous God who will address rebellion against His ways. In particular God is jealous for his land of Israel and people (Joel 2:18, Zechariah 1:14, Zechariah 8:2).

God is Slow to Anger

The Lord is slow to anger but great in power,
and the Lord will by no means clear the guilty.

Whilst God tells us that He will take vengeance on those that are enemies to His people, land and standards he also tells us that he is slow to anger and gives people opportunity to change their ways. Our God is compassionate, longsuffering and slow to anger as Nahum and Exodus 34:6-7, Psalm 103:8, Psalm 145:8 and Joel 2:13 details.

God is a Stronghold and Protector

The Lord is good,
a stronghold on a day of trouble;
he protects those who take refuge in him

As Nahum 1:7 details that God is good, a stronghold or fortress and protector of those who align themselves to him and his ways. This is the same message of Exodus 34:6-7, Psalm 103:8, Psalm 145:8 and Joel 2:13.

We Must Choose Who We Want to Follow - God's or Man's Ways 

Notice therefore the kindness and harshness of God—harshness toward those who have fallen, but God’s kindness toward you, provided you continue in his kindness; otherwise you also will be cut off (Romans 11:22)