# Lord Jesus Christ himself

Here "himself" gives additional emphasis to the phrase "Lord Jesus Christ."

# may our Lord ... who loved us and gave us

The words "our" and "us" refer to all believers. 

# gave us eternal comfort and good hope through grace

"caused us to have eternal comfort and good hope through grace"

# eternal comfort

"comfort that never ends" or "unceasing encouragement"

# good hope

"certainty that we will receive good things from him" or "confidence that we will good things from him"

# through grace

"because of his kindness"