Matthew 20:6
When he went out about five, he found some other men standing there, and said to them 'Why have you been standing here all day long, doing nothing?'
John 6:27
Work, not for the food that perishes, but for the food that lasts for Immortal Life, which the Son of Man will give you; for upon him the Father--God himself--has set the seal of his approval."
Philippians 3:13-14
For I, Brothers, do not regard myself as having yet laid hold of it. But this one thing I do--forgetting what lies behind, and straining every nerve for that which lies in front,
2 Peter 1:10-11
Therefore, Brothers, do your best to put God's Call and Selection of you beyond all doubt; for, if you do this, you will never fall.