1 Corinthians 15:58
Therefore, my dearly loved brothers, stand firm [in the faith]; do not be moved [from your commitment]. Always do your best to work for the Lord, since you know that your labor in the Lord's [service] is not for nothing.
Titus 3:8
This saying is trustworthy and I want you [in your teaching] to affirm these things with confidence, so that those people who have trusted God will be careful to devote themselves to doing good deeds. These things [i.e., just mentioned] are good and profitable for people [to do].
Hebrews 6:11
And it is our desire that each one of you shows the same eagerness [to live for Christ], so as to be fully assured of your hope [in never ending life] until the end [of your days].
2 Peter 1:5-10
And for this very reason, you people should make every effort to develop goodness along with your faith,
2 Peter 3:14
So, my dearly loved ones, while you are waiting for these things [to happen], do your best to be found at peace with God, pure and blameless in His sight.