Hello Everyone!!!
First of all, The people of Israel was unstable as his communion with God, once served God once no more.
The people of Israel were full of sin and wickedness, but God that is unlike anything we can imagine, offers an alternative to the people.
In verses 16-18 God shows to Israel's people the direction.
16 - wash and make yourselves clean. Take your evil deeds out of my sight! Stop doing wrong,
17 - learn to do right! Seek justice, encourage the oppressed. Defend the cause of the fatherless,plead the case of the widow.
God bless you