Renewing Our Strength #29

The big theme in Hebrews 4 is "entering God's rest" - enjoying with Him that view He had when He made the world and saw it was good.  This is contrasted with those who in the Old Testament had given up, fallen into disobedience, and did not "enter His rest." The writer here is trying to encourage those who were struggling in their faith, tempted by persecution and struggles to give up and turn away from God. He says: "Don't do that. there is hope and strength in Christ", so that by then end of the chapter he says: 
14 Since then we have a great high priest who has passed through the heavens, Jesus, the Son of God, let us hold fast our confession. 15 For we do not have a high priest who is unable to sympathize with our weaknesses, but one who in every respect has been tempted as we are, yet without sin. 16 Let us then with confidence draw near to the throne of grace, that we may receive mercy and find grace to help in time of need.

Mercy and grace are available in Christ.  God does not give us what we deserve in terms of punishment, and He gives us what we do not deserve: His grace - the God-given ability to do what we cannot do on our own.  In Christ we can have renewed strength, faith, endurance and hope. Come to Him as the Great High Priest. He knows; He understands, and He can do something about it. He will renew your strength in time of weakness.