Hebrews 4:14 - Great high priest...Jesus the Son of God

8 For if Jesus had given them rest, then would he not afterward have spoken of another day.
9 There remaineth therefore a rest to the people of God.
10 For he that is entered into his rest, he also hath ceased from his own works, as God did from his. 

What an interesting passage. Early on in Chapter 4, it's discussed that the Gospel was offered to the early Israelites, but that they did not have the faith necessary to know it was true. The discussion then turns to the topic of rest; the Israelites expected that their Savior would rescue them from their struggles and labors, and would squash their enemies. Christ was the exact opposite of what they had hoped for. The Savior preached love and peace. He came to the earth in the humblest of ways, and never once acted as though He were a king. He then willingly gave Himself up in order to fulfill His Atonement and die for our sins. The Atonement is a two-way contract, however. We have to be willing to put in the work in order for it to work. We must exercise the necessary faith in Him so that we can repent and find joy in this world. We should not, as the Israelites did, expect to be rescued from our labors, but rather, we should endure to the end, overcoming our labors with the help of Jesus Christ.

14 Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.

Picking up where the last paragraph left off: No one should expect life to be easy because of the Atonement. With that said, the Atonement does make it bearable. We must "hold fast our profession," and our faith, and labor for and with Christ so that we can return to our Heavenly Father someday.