Psalm 62 is a call for confidence in God as his people are faced with the wicked who use power and wealth to oppress them.  The temptation in this case is to lose hope and to despair or seek security in power and wealth rather than in God.

1-2 – The singer begins by stating that on God alone and in silence will his salvation come.

3-4 – Next the singer addresses the wicked who attack him with lies and injustice.  

5-7 – Verses 5-7 repeat verses 1-2, although the description of “wait in silence” is now and imperative, a command.  In this way the singer expresses confidence in God salvation.

8-10 – Here the singer addresses the faith.  The wicked are but a breath.  Do not trust riches.

11-12 – God’s word is certain.  To say once and then twice is to say that the idea is sure or certain.  In this case, God alone has power and steadfast love, and God will judge a man’s heart by his deeds.  We see the same sentiment in the New Testament Book of James chapter 2, where faith is displayed by ones works.