Hope

Romans 15:13 (KJV)
¹³ Now the God of hope fill you with all joy and peace in believing, that ye may abound in hope, through the power of the Holy Ghost.

Hope - 

from a primary elpo (to anticipate, usually with pleasure); expectation (abstract or concrete) or confidence :- faith, hope.

Strong's Talking Greek & Hebrew Dictionary.

We can anticipate God keeping His promises to us (and be happy about it). 

We can expect God to do what He said He will do.

We can have confidence in Him to be who He says He is.

He CANNOT lie.

He DOES NOT change.

He ALREADY GAVE us Jesus and withholds no good thing from those who seek Him (Ps 34:10 and Rom 8:32 ).

The joy, the peace and the answer to our prayer (the thing we are hoping for .. see Heb.11:1 ) come in response to our believing, it is "in" believing, during believing, after believing but NOT before.

Jesus said in one place, "Have faith in God" and in another "You believe in God, believe also in Me". Both "faith" and "believing" carry in their definitions the idea of trust. So lets look at our text with that in mind.

Romans 15:13 (KJV)
¹³ Now the God of hope fill you with all joy and peace in trusting, that ye may abound in hope, through the power of the Holy Ghost. 

Have trust in God ... You trust in God, trust also in me.

You have all probably seen a demonstration of the "trust" exercise where one person falls backwards trusting in their co-worker or teammate to catch them. 

Imagine yourself falling into the arms of Jesus. Declare your trust in Him .. declare it TO Him and as you relax into His arms give Him thanks for the answer He said you could have.

SELAH