Isaiah 40:28-31 (NASB)
28 Do you not know? Have you not heard? The Everlasting God, the LORD, the Creator of the ends of the earth Does not become weary or tired. His understanding is inscrutable.
29 He gives strength to the weary, And to him who lacks might He increases power.
30 Though youths grow weary and tired, And vigorous young men stumble badly,
31 Yet those who wait for the LORD Will gain new strength; They will mount up with wings like eagles, They will run and not get tired, They will walk and not become weary.

Psalms 34:9 (NASB)
O fear the LORD, you His saints; For to those who fear Him there is no want.

Matthew 11:28-30 (NASB)
28 "Come to Me, all who are weary and heavy-laden, and I will give you rest.
29 "Take My yoke upon you and learn from Me, for I am gentle and humble in heart, and YOU WILL FIND REST FOR YOUR SOULS.
30 "For My yoke is easy and My burden is light."